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Öğe Angular photogrammetric analysis of the soft tissue facial profile of Turkish adults(OXFORD UNIV PRESS, 2009) Malkoc, Siddik; Demir, Abdullah; Uysal, Tancan; Canbuldu, NaciOne of the most important components of orthodontic diagnosis and treatment planning is the evaluation of the patient's soft tissue profile. The aim of this study was to develop angular photogrammetric standards for Class I Anatolian Turkish males and females. A random sample of 100 Turkish individuals (46 males and 54 females; ages 19-25 years) was obtained. The photographic set-up consisted of a tripod that held a 35 mm camera and a primary flash. The camera was used in its manual position and photographic records were taken of the subjects in natural head posture. The photographic records, 35 mm slide format, were digitized and analyzed using the Quick Ceph Image software program for Windows. Twelve measurements were digitally analyzed on each photograph. For statistical evaluation a Student's t-test was performed and the reliability of the method was analyzed. The results were compared with reported norms of facial aesthetics. The nasofrontal (G-N-Prn), nasal (Cm-Sn/N-Prn), vertical nasal (N-Prn/TV), and nasal dorsum (N-Mn-Prn) angles showed statistically insignificant gender differences (P > 0.05). The nasolabial angle (Cm-Sn-Ls) demonstrated large variability. Gender differences were present in the mentolabial (Li-Sm-Pg) and cervicomental (G-Pg/C-Me) angles. The mentolabial angle showed a high method error and large variability. Facial (G-Sn-Pg) and total facial (G-Prn-Pg) convexity angles were similar, while Cm-Sn-Ls angle range was larger compared with other angles. The mean values obtained from this sample can be used for comparison with records of subjects with the same characteristics and following the same photogrammetric technique. Angular photogrammetric profile analysis can provide the orthodontist with a way of determining problems associated with various soft tissue segments of the face.Öğe Anti bakteriyel özelliğe sahip self etching adeziv sistemin dekalsifikasyon sonrasında bağlanma dayanımı üzerine etkileri(2004) Yıldırım, Sibel; Uysal, Tancan; Başçiftçi, Faruk AyhanOrtodontik braketlerin çevresinde zamanla oluşan dem-ineralizasyon halen klinik açıdan önemli bir problemdir. Son yıllarda geliştirilen antibakteriyel bonding ajanların, kavitede kalan bakteriler ve mikro sızıntı sebebiyle oluşan bakteriyel invazyona karşı bakterisid etki göstererek ikincil çürük oluşumunu engelleyebilecekleri bildirilmektedir. Benzer şekilde ortodontik braketler çevresinde de bakteriyel metabolizmanın engellenmesi çürük oluşumunun önüne geçebilecektir. Bu sebeple bu çalışmada antibakteriyel özelliğe sahip olan bir bonding ajanı ile, iki farklı yöntemle uygulanan bonding ajanlarının, ortodontik braket çevresinde deneysel suni demineralizasyon ortamıyla yaratılmaya çalışılan demineralizasyona olan etkileri, bahsedilen bonding ajanlarla diş yüzeyine yapıştırılan braketlerin bağlanma derecelerinde farklılık yaratıp yaratmadığının tespitiyle araştırılmıştır. Bu amaçla çekimden hemen sonra, çürüksüz ve mine yüzeyinde kırık ve çatlakları olmayan 60 adet insan pre-molar dişi kullanıldı. Braketler antibakteriyel MDPB monomeh içeren Clearfill ABF Bond, aynı materyalin MDPB monomer içermeyen formu olan Clearfill SE Bond ve Transbond Plus bonding ajanlarıylâ dişlerin bukkal yüzeylerine kompozit rezin aracılığıyla yapıştırıldı. Tüm dişler 14 gün boyunca deneysel dekalsifikasyon solüsyonunda bırakıldı. Ardından tüm braketler test cihazında çekme-koparma işlemine tabi tutuldu. Veriler istatistiksel olarak varyans analizi, Tukey HSD testi ve ki-kare analizi aracılığıyla değerlendirildi. Varyans analizi, değerlendirilen gruplar arasında istatistiksel olarak anlamlı farklılıkların olduğunu göstermektedir. (p0,05). Elde edilen ortalama bağlanma dayanımları diğet çalışmalar ile karşılaştırıldığında klinik olarak kabul edilebilir derecede bulunmuştur. Ancak, çalışma sonuçlarımız Clearfill ABF bond ile yapıştırılan braketlerin diğer gruplara göre istatistiksel olarak anlamlı düzeyde düşük bağlanma dayanımına sahip olduğunu göstermektedir. Uygulanan 3 farklı adeziv sistem, braketlerin kopma karakteristiklerini de önemli derecede etkilemektedir.Öğe The Association of Occlusal Factors With Masticatory Muscle Tenderness in 10- to 19-Year Old Turkish Subjects(2005) Demir, Abdullah; Uysal, Tancan; Basçiftçi, Faruk Ayhan; Guray, EnisThe aims of this study were (1) to investigate the relationship between occlusal factors and masticatory muscle tenderness among 10- to 19-year-old (mean 14 years eight months) Turkish subjects and (2) to identify possible sex differences between them. The sample consisted of 716 individuals (355 male and 361 female subjects). Tenderness with palpation of masseter and temporalis muscles and functional manipulation of lateral and medial pterygoid muscles was registered. The examiners recorded the Angle classification bilaterally for molars, presence of anterior and posterior crossbites, excessive overjet, open and deep bites, functional shift, and severity of anterior crowding. Associations between the occlusal factors and muscle tenderness according to sex were evaluated with chi-square analysis. Statistically significant associations were found between masticatory muscle tenderness and all the investigated occlusal factors except posterior crossbite and functional shift. Masseter, medial, and lateral pterygoid muscle tenderness was higher in female subjects. Medial and lateral pterygoid muscle tenderness in Class I cases and masseter and medial pterygoid muscle tenderness in Class II, division 1 malocclusion cases were higher in female subjects (P < .05). In open-bite cases, medial pterygoid muscle tenderness (P < .05), in deep-bite cases, masseter (P < .01) and medial pterygoid (P < .05) muscle tenderness, and in excessive overjet cases, masseter muscle tenderness (P < .05) were also higher in female subjects. These results suggest that greater masticatory muscle tenderness in female subjects may contribute to the greater prevalence of temporomandibular disorders in them.Öğe Can Previously Bleached Teeth Be Bonded Safely?(Mosby-Elsevier , 2003) Uysal, Tancan; Başçiftci, Faruk Ayhan; Üşümez, Serdar; Sarı, Zafer; Büyükerkmen, AhmetThe purpose of our study was to determine the effect of a 35% hydrogen peroxide bleaching agent on the shear bond strength of metallic orthodontic brackets. Sixty premolars were randomly divided into 3 groups of 20 each. Teeth in group A were etched with 37% phosphoric acid before bonding metallic premolar brackets. Teeth in the other 2 groups were bleached with a 35% hydrogen peroxide in-off ice bleaching agent according to the manufacturer's recommendations. Twenty bleached teeth (group B) were bonded immediately, and the other 20 (group C) were stored in artificial saliva for 30 days before bonding. Shear bond strength of these brackets was measured on a universal testing machine and recorded in MPa. Adhesive remnant index (ARI) scores were determined after the brackets failed. Data were analyzed with analysis of variance (ANOVA) and chi-square tests. The shear bond strength values of groups A, B, and C were 12.9 +/- 3.4, 12.0 +/- 4.6, and 14.8 +/- 4.0 MPa, respectively. Results of ANOVA showed no statistically significant differences in shear bond strengths between groups (P > .05). ARI scores were significantly different in all groups. The unbleached group's failures were primarily at the bracket/adhesive interface, whereas the bleached groups either showed cohesive failures within the adhesive or failed at the adhesive/enamel interface. The results of this study suggest that office bleaching with hydrogen peroxide does not adversely affect the bond strengths of brackets bonded immediately after bleaching or 30 days after bleaching, even though bleaching can result in differences in the failure site.Öğe Chronologic Age and Skeletal Maturation of the Cervical Vertebrae and Hand-Wrist: İs There a Relationship?(Mosby-Elsevier, 2006) Uysal, Tancan; Ramoğlu, Sabri İlhan; Başçiftçi, Faruk Ayhan; Sarı, Zafer[Abstract not Available]Öğe Conventional and high intensity halogen light effects on water sorption and microhardness of orthodontic adhesives(E H ANGLE EDUCATION RESEARCH FOUNDATION, INC, 2008) Uysal, Tancan; Basciftci, Faruk Ayhan; Sener, Yagmur; Botsali, Murat Selim; Demir, AbdullahObjective: To test the null hypothesis that when the equivalent total light energy is irradiated to three orthodontic adhesive resins, there is no difference between the microhardness and water sorption values regardless of the curing light sources. Materials and Methods: Samples were divided into six groups according to the combination of three orthodontic adhesives (Kurasper F, Light-Bond, Transbond XT) and two light intensities (quartz tungsten halogen [QTH] and high intensity quartz tungsten halogen [HQTH]). One half of each of the 40 samples of three adhesive pastes was polymerized for 20 seconds by a QTH light source, and the other half was polymerized for 10 seconds by a HQTH light source. Water sorption was determined and Vickers hardness was established with three measurements per sample at the top, center, and bottom. Statistical analysis was performed using two-way analysis of variance (ANOVA) with multiple comparisons (Tukey-HSD). Results: Statistically significant differences were found among all adhesives for water sorption and hardness values cured with QTH and HQTH. The HQTH curing unit resulted in higher values than did the QTH. The highest water sorption values were observed for Kurasper F cured with HQTH and the lowest value was observed for Transbond XT cured with QTH. For microhardness Light-Bond cured with HQTH produced the highest values, and Transbond XT cured with QTH produced the lowest. Conclusions: When the equivalent total light energy is irradiated to three orthodontic adhesive resins, there are significant differences between the microhardness and water sorption values cured with the QTH and HQTH light source. The null hypothesis is rejected.Öğe Conventional and High-Intensity Halogen Light Effects on Polymerization Shrinkage of Orthodontic Adhesives(E H Angle Education Research Foundation, Inc, 2006) Şener, Yağmur; Uysal, Tancan; Başçiftçi, Faruk Ayhan; Demir, Abdullah; Botsalı, Murat SelimThe objectives of this study were to compare the polymerization shrinkage of three orthodontic adhesives. In addition we wanted to determine the effectiveness of the high-intensity quartz tungsten halogen (HQTH) in curing orthodontic adhesives on polymerization shrinkage with that of the quartz tungsten halogen (QTH). A total of 120 glass ring molds were prepared using a low-speed saw. The internal surface of the glass rings were roughened and etched. Adhesive pastes were placed into the glass molds, which were sandwiched between two glass slides. Samples were divided into six groups according to the combination of three orthodontic adhesives (Kurasper F, Light Bond, and Transbond XT) and two light intensities. One half of each 40 samples of three adhesive pastes was polymerized for 20 seconds by a QTH (Hilux 350), and the other half was polymerized for 10 seconds by a HQTH (Optilux 501). The volumetric polymerization shrinkage for each system was measured through the specific density method modified by Puckett and Smith. Statistical analysis was performed using two-way analysis of variance for intergroup comparisons. The HQTH-curing unit resulted in a more polymerization shrinkage than did the QTH for all investigated adhesives. However, no statistically significant differences were found. The highest shrinkage was observed for Light Bond cured with HQTH (1.59 +/- 0.82%), and the lowest value was observed for Transbond XT cured with QTH (1.23 +/- 0.60%). There are no significant differences in polymerization shrinkage of the three investigated orthodontic adhesives when polymerized with a QTH or a HQTH.Öğe Determination of Holdaway Soft Tissue Norms in Anatolian Turkish Adults(MOSBY-ELSEVIER, 2003) Başçiftçi, Faruk Ayhan; Uysal, Tancan; Büyükerkmen, AhmetThe purpose of this study was to determine Holdaway soft tissue standards for Anatolian Turkish adults. The material included the lateral cephalometric radiographs of 175 patients, 90 men and 85 women, selected from the dental students at Selcuk University, Konya, Turkey. After analyzing these radiographs, 105 subjects (55 men, mean age 22.61, and 50 women, mean age, 22.14) with normal anteroposterior and vertical skeletal relationships were selected for the study. Ten linear and 2 angular measurements were analyzed on each radiograph. The landmarks were located according to the definitions of Holdaway. For each variable, the arithmetic mean and standard deviation were calculated. For statistical evaluation, an independent-samples t test was performed. Except for the measurements of soft tissue chin thickness and basic upper lip thickness, all soft tissue measurements were similar to Holdaway norms. For nose prominence, inferior sulcus to H line, upper lip strain, soft tissue chin thickness, and basic upper lip thickness measurements, statistically significant sex differences were determined. We believe it is appropriate to use these Anatolian Turkish soft tissue norms in daily orthodontic practice.Öğe Different pulse modes of Er:YAG laser irradiation: effects on bond strength achieved with self-etching primers(URBAN & VOGEL, 2016) Akın, Mehmet; Veli, İlknur; Erdur, Emire Aybüke; Aksakallı, Sertaç; Uysal, TancanThe aim of this study was to compare the effects of different pulse modes of Er:YAG laser on shear bond strength (SBS) of orthodontic brackets bonded with self-etching primers (SEP) and phosphoric acid etching. A total of 120 human mandibular third molars were randomly assigned to 3 groups of 40 specimens depending on the bonding procedure to be used. The groups were divided into two subgroups according to the pulse mode of the erbium-doped yttrium aluminum garnet (Er:YAG) laser irradiation as medium-short pulse (MSP) mode and quantum-square pulse (QSP) mode at 120 mJ, 10 Hz, 1.2 W. In each subgroup, the mesio- or distobuccal tooth surfaces were randomly assigned as experimental or control sides. After surface preparation with different modes of Er:YAG laser on experimental side, whole buccal tooth surfaces were treated with phosphoric acid etching or two different SEPs. Then metallic brackets were bonded with Transbond XT (3 M Unitek, Monrovia, CA, USA) or Kurasper F (Kuraray, Okayama, Japan). SBS values and the amount of adhesive remaining on the tooth after debonding were assessed. One-way analysis of variance (ANOVA) was used to evaluate the changes in mean SBS between groups resulting from laser etching, followed by post hoc test of Tukey. There were statistically significant differences between the experimental and control sides of all groups (p < 0.05). Laser etching with QSP and MSP modes increases the SBS of metallic brackets and Er:YAG laser irradiation with QSP mode increases the SBS of SEPs.Öğe Effects of different pre-treatment methods on the shear bond strength of orthodontic brackets to demineralized enamel(TAYLOR & FRANCIS LTD, 2016) Veli, Ilknur; Akin, Mehmet; Baka, Zeliha Muge; Uysal, TancanObjective. To compare the effects of different treatment methods used for the enamel damage, on the shear bond strength (SBS) and fracture mode of orthodontic brackets. Materials and methods. Freshly-extracted 140 premolars were randomly allocated to seven groups: Group I was considered as the control of other groups. The remaining groups were exposed to demineralization. In group II, brackets were directly bonded to the demineralized enamel surface. CPP-ACP paste (GC Tooth Mousse), fluoride varnish (Bifluorid 12), microabrasion with a mixture prepared with 18% hydrochloric acid and fine pumice powder, microabrasion with an agent (Opalustre) and resin infiltrant (Icon (R)) were applied in Groups III, IV, V, VI and VII, respectively. The specimens were tested for SBS and bond failures were scored according to the Adhesive Remnant Index (ARI). Analysis of variance and Tukey tests were used to compare the SBS of the groups. ARI scores were compared with G-test. The statistical significance was set at p < 0.05 level. Results. Statistically significant differences were found among seven groups (F = 191.697; p < 0.001). The SBSs of groups I (mean = 18.8 +/- 2.0 MPa) and VII (mean = 19.1 +/- 1.4 MPa) were significantly higher than the other groups. No statistically significant difference was found between groups IV (mean = 11.5 +/- 1.2 MPa) and V (mean = 12.6 perpendicular to 1.5 MPa). The differences in ARI scores of the groups were statistically significant (p < 0.01). Conclusions. All demineralization treatment methods improve bonding to demineralized enamel. Resin infiltrant application after demineralization showed similar bond strength values as intact enamel.Öğe Effects of High-İntensity Curing Lights on Microleakage Under Orthodontic Bands(Mosby-Elsevier, 2010) Uysal, Tancan; Ramoğlu, Sabri İlhan; Ülker, Mustafa; Ertaş, HüseyinIntroduction: Our objective was to compare the effects of 3 light-curing units (LCUs) (quartz-tungsten-halogen [QTH], light-emitting diode [LED], and plasma-arc curing [PAC]) on the microleakage patterns of a polyacid-modified composite (PAMC) for band cementation between the cement-enamel and the cement-band interfaces from the buccal, lingual, occlusal, and gingival margins. Methods: Sixty freshly extracted third molars were randomly divided into 3 groups of 20 teeth each. Microetched molar bands were cemented in all groups with the PAMC (Ultra Band-Lok, Reliance Orthodontic Products, Itasca, Ill) and cured for 30 seconds with the QTH (Hilux 350, Express Dental Products, Toronto, Ontario, Canada), for 20 seconds with the LED (Elipar Freelight 2, 3M Espe, Seefeld, Germany), or for 6 seconds with the PAC (Power-Pac, American Medical Technologies, Hannover, Germany). A dye penetration method was used for microleakage evaluation. Microleakage was determined with a stereomicroscope for the cement-band and cement-enamel interfaces from the buccal and lingual sides at the occlusal and gingival margins. Statistical analyses were performed with the Kruskal-Wallis and Mann-Whitney U tests. The level of significance was set at P<0.05. Results: The gingival sides in the LED and PAC groups had higher microleakage scores compared with those observed on the occlusal sides at both the cement-band and cement-enamel interfaces. The buccal sides had similar microleakage values compared with those on the lingual sides for the cement-enamel and cement-band interfaces in all LCU types. Statistical comparisons showed that there were statistically significant differences among the investigated LCUs at the cement-enamel interface (P<0.05). Post hoc comparisons showed statistically significant microleakage differences between the PAC (median, 0.950 mm), the QTH (median, 0.383 mm) (P<0.01), and the PAC and the LED (median, 0.558 mm) (P<0.05) LCUs at the cement-enamel interfaces. Conclusions: The high-intensity curing device PAC is associated with more microleakage than the LED and QTH at the cement-enamel interface.Öğe Effects of Thermocycling on the Degree of Cure of Two Lingual Retainer Composites(Japanese Soc Dental Materials Devices, 2010) Çatalbaş, Bülent; Uysal, Tancan; Nur, Metin; Demir, Abdullah; Gündüz, BenizThe aim of this study was to evaluate the effects of thermocycling on the degree of cure (DC) and water sorption behavior of two lingual retainer composites. A total of 50 composite specimens, 5 mm diameter and 2 mm height, were prepared using Light Cure Retainer (R) (LCR) (Reliance) and Transbond Lingual Retainer (R) (TLR) (3M Unitek). After 40-second curing with a halogen light and after 24-hour water storage, the composite specimens were subjected to different thermocycling regimes. Absorbance peaks to monitor the DC were recorded using Fourier transform infrared (FTIR) spectroscopy, while water sorption was calculated in mu g/mm(3). On DC, significant differences among the different thermocycling regimes were observed only for the TLR specimens (p<0.05). On water sorption behavior, an increase in the number of thermal cycles resulted in increased water sorption for both composites, but the statistical differences in these groups were not significant. On the effect of thermocycling up to 20,000 cycles, present findings showed that LCR was less affected than TLR. Further, LCR exhibited higher DC and lower water sorption values than TLR after thermal cycling.Öğe Erişkin Türk Toplumunda Dental Ark, Kortikal ve Apikal Kemik Kaide Genişliklerinin İdeal Normlarının Belirlenmesi(2003) Uysal, Tancan; Sarı, ZaferBu çalışmanın amacı, 1. Erişkin Türk toplumu için dental ark, kortikal ve apikal kemik kaide genişliklerinin ideal boyutlarını ortodontik modeller aracılığıyla değerlendirmek, 2. Saptanan değerler arasında cinsiyet farklılığını tespit ederek, erişkin erkek ve bayan bireyler için ayrı norm değerlerini oluşturmak, 3. İncelenen transversal mesafelerin birbirleri ile ilişkilerini belirlemektir. Bu çalışma, ideal oklüzyona sahip oldukları belirlenen 78 bayan, 72 erkek toplam 150 hastadan elde edilen ortodontik model üzerinde yürütüldü. Ortodontik modeller üzerinde, dental ark genişliklerinin değerlendirilmesi amacıyla 6, kortikal ve apikal kemik 3 genişliklerinin değerlendirilmesi amacıyla 12 parametre ölçüldü. Araştırmanın tanımlayıcı istatistiksel verileri ve karşılaştırmaları, SPSS paket programında, Pearson korelasyon analizi ve bağımsız t testi kullanılarak yapıldı. Elde edilen veriler değerlendirilerek erişkin Türk toplumunun transversal yön model normları belirlenmiştir. Elde edilen bulgular değişik ülkelerde benzer çalışmalardan elde edilen bulgularla karşılaştırılarak, sonuçlar yorumlanmıştır. Erişkin erkek ve bayan bireyler için normlar ayrı ayrı oluşturulmuştur. Alt ve üst çenede belirlenen tüm mesafe ölçümleri için erkek ve bayan bireyler arasında istatistiksel olarak önemli cinsiyet farklılığının olduğu belirlenmiştir, iki çene bulgularının tamamında erkek bireylere ait transversal yön mesafelerinin bayanlara göre istatistiksel olarak önemli derecede yüksek olduğu görülmüştür. İlişkisi incelenen tüm değerler da anlamlı korelasyonun varlığı tespit edilmiştir (p0.01). İki çene arasında üst molarlar arası genişlik ile alt molarlar arası genişlik en yüksek ilişkiyi gösterirken (0,869), en düşük korelasyon ÜAC-C ile AAC-C değerleri arasında bulunmuştur (0,439).Öğe Gargara ve vernik formunda uygulanan anti-mikrobiyal ajanların ortodontik braketlerin bağlanma dayanımına etkisi(2004) Uysal, Tancan; Karaman, Ali İhyaBu araştırmanın amacı, farklı formdaki anti-mikrobiyal ajanlar ile karıştırılan ortodontik primerin asitli mine yüzeyine uygulanmasının braketlerin bağlanma dayanımına olan etkisini incelemek ve metalik ortodontik braketlerin kopma tipini belirlemektir. Seksen adet çürüksüz insan premolar dişi rasgele 20'şerlik gruplar halinde dörde bölündü. Her diş kronu açıkta kalacak şekilde vertikal olarak otopolimerizan akrilik blok içine gömüldü. Metalik ortodontik braketlerin yapıştırılması amacıyla ortodontik kompozit rezin (Transbond XT) kullanıldı. Tüm gruplarda, dişlerin bukkal yüzeyleri %37'lik fosforik asit ile 30 saniye asitlendi. Grup 1'deki dişler kontrol grubu olarak kullanıldı ve braketler standart prosedürle yapıştırıldı. Diğer 3 grupta ise primer (Transbond XT) ve anti-mikrobiyal içerikli preperatlardan (Klorhex gargara 1:1 oranında, Kloroben gargara 1:1 oranında ve Cervitec vernik 1:2 oranında) birini içeren bir karışım hazırlandı. Bu karışımlar asitlenmiş mine yüzeyine uygulanarak 20 sn. ışık verildi ve takiben braketler yapıştırıldı ve 40 sn. ışık uygulandı. Braketlerin bağlanma dayanımları (MPa) Universal test cihazı ile ölçüldü. Braketlerin koparılmasından sonra kopma karakteristikleri ARI skorları ile belirlendi. Veriler varyans analizi (ANOVA), Tukey çoklu karşılaştırma testi (HSD) ve ki-kare analizi kullanılarak analiz edildi. ANOVA sonuçları gruplar arasında istatistiksel olarak önemli farklılıkların olduğunu göstermektedir (p0,001). Çalışma bulgularımız. Grup 1 (kontrol) ve Grup 4 (Cervitec vernik)'e ait bağlanma dayanımı değerlerinin diğer uygulama yöntemlerine göre daha yüksek olduğunu göstermektedir. Hidrofobik özellik taşıyan Transbond XT primer, gargara formundaki anti-mikrobiyal ajanlarla karışmamaktadır. Dolayısıyla Grup 2 ve 3'den elde edilen bağlanma dayanımları ve braket kopma oranları klinik olarak kabul edilebilir düzeyde değildir. Farklı anti-mikrobiyal ajanların diş yüzeyine uygulanması kopma karakteristiğini de önemli derecede etkilemektedir.Öğe Intermaxillary Tooth Size Discrepancy and Malocclusion: Is There a Relation?(2005) Uysal, Tancan; Sarı, Zafer; Başçifçi, Faruk Ayhan; Memili, BadelThe aims of this study were to identify the possible sex differences in tooth size ratios between males and females, to determine whether there is a difference in the incidence of tooth size discrepancies for both the anterior and overall ratios when comparing with Angle Class I; Class II, division 1; Class II, division 2; and Class III malocclusion groups, to compare the tooth size ratios of different malocclusion groups with the anterior and overall tooth size ratios of 150 untreated normal occlusion subjects. In addition, the aim was to determine the percentage of tooth size discrepancies outside 2 SD from Bolton means for tooth ratios present in each malocclusion group and in the overall sample of this study. This study consisted of 150 subjects who served as the normal occlusion group and 560 patients who showed four different malocclusion characteristics (Angle Class I; Class II, division 1; Class II, division 2; and Class III). Tooth size measurements were performed on the models of normal occlusion and pretreatment models. For statistical evaluation, Student's t-test, analysis of variance and Tukey Honestly Significant Difference tests were performed. A significant sex difference was found only in the overall ratio for normal occlusion subjects (P < .001). All malocclusion groups showed statistically significant higher overall ratios than the normal occlusion group (P < .001). There were no statistically significant differences among malocclusion groups; however, there were a large number of patients within each group who had discrepancies greater than 2 SD from the mean. Further investigations are needed to explain the probable racial differences and relationships between malocclusion and tooth size measurements.Öğe New regression equations for mixed-dentition arch analysis in a Turkish sample with no Bolton tooth-size discrepancy(MOSBY-ELSEVIER, 2009) Uysal, Tancan; Basciftci, Faruk Ayhan; Goyenc, YasarIntroduction: Our objectives were to establish new regression equations derived from 228 Turkish patients (100 boys, 128 girls) with no intermaxillary tooth-size discrepancy that would give the greatest correlation coefficient for the sum of permanent tooth widths of the canines and the premolars of both jaws, according to sex, and to compare our new data with those from other studies. Methods: Mesiodistal tooth widths were measured from dental casts. Student t tests were carried out to compare tooth sizes between the sexes and the right and left sides of the arches. The constants a and b in the standard linear regression equation (y = a + bx), the correlation coefficients (r), the coefficients of determination (r(2)), and the standard errors of the estimates (SEE) were calculated. Results: Statistically significant differences were found between the widths of teeth between the sexes in both the maxillary (P < 0.01) and mandibular (P < 0.001) arches. The r value was 0.956 to 0.989, with the higher coefficients in the girls. The r(2) values were 91% in boys and 98% in girls, and the SEE was better in the maxilla and the mandible (0.013 mm) for the girls. The regression equations produced predictions of mesiodistal width summations for the maxillary and mandibular canine and premolar segments that were much different from other reported studies. Conclusions: New regression equations were derived for Turkish people. The prediction equations and probability tables should be revised by using subjects with no tooth-size discrepancy. (Am J Orthod Dentofacial Orthop 2009;135:343-8)Öğe Occlusal Contact Changes with Removable and Bonded Retainers in a 1-Year Retention Period(E H ANGLE EDUCATION RESEARCH FOUNDATION, INC, 2009) Sari, Zafer; Uysal, Tancan; Basciftci, Faruk Ayhan; Inan, OzgurObjective: To test the hypothesis that there is no difference in the number of occlusal contacts in centric occlusion in patients treated with bonded and removable retention procedures and a control group during a 1-year retention period. Materials and Methods: Twenty-five patients received a removable Hawley retainer, and 25 patients received maxillary and mandibular bonded retainers. The retainer patients were compared with 20 control subjects with normal occlusions. Silicone-based impression bites were used to record occlusal contacts. Paired-sample t-test, analysis of variance (ANOVA), and Tukey tests were used to evaluate intragroup and intergroup differences. Results: An increased number of occlusal contacts were recorded in total-arch and posterior combined (actual/near) teeth during the retention period as compared with the control group. In the Hawley group, actual and total contacts on the first and second molar and actual contacts on the premolar and canine showed statistically significant increases. In the bonded retainer group, near and total contacts on the first and second molars and premolars showed statistically significant increases. Slight occlusal changes were seen in the control sample during the observation period, presumably from growth and development. ANOVA comparisons of total contacts of anterior and posterior teeth indicated statistically significant differences in the three groups on posterior segments. Conclusions: The hypothesis is rejected. Both retention procedures allowed relative vertical movement of the posterior teeth, but the number of contacts on the posterior segment was increased more in the bonded retainer group than in the Hawley and control groups at the end of retention. (Angle Orthod. 2009;79:867-872.)Öğe Occlusal contacts with different retention procedures in 1-year follow-up period(MOSBY-ELSEVIER, 2007) Basciftci, Faruk Ayhan; Uysal, Tancan; Sari, Zafer; Inan, OzgurIntroduction: The aim of this follow-up study was to evaluate the number of contacts in centric occlusion during a 1-year retention period in patients treated with 2 retention procedures and in a control sample. Methods: Twenty patients received modified wraparound Hawley retainers, and 20 received maxillary Jensen plates with mandibular fixed retainers. These retention patients were compared with a control group of 20 subjects with normal occlusions. Silicone-based impression bites were used to record occlusal contacts. Paired and independent-sample t tests were used to evaluate intragroup and intergroup differences. Results: Contacts increased in the total arch and the posterior combined (actual/near) during the retention period compared with the control group. In the Hawley retainer group, actual contacts on the second molars (P < .05), near contacts on the premolars (P < .05), and total contacts on the first molars (P < .05) and premolars (P < .01) had statistically significant increases. In the maxillary Jensen plate and mandibular fixed lingual retainer group, the number of actual contacts on the posterior segment increased. Actual contacts on the first molars (P < .01), second molars (P < .01), premolars (P < .05), and canines (P < .05), and total contacts on the first (P < .05) and second (P < .05) molars had statistically significant increases. During the observation period, some slight occlusal changes were seen in the control sample, presumably from growth and development. At the end of the study, during the 1-year follow-up period, no statistically significant occlusal contact differences were observed in the 3 groups. Conclusions: Retention procedures carried out in this study allowed relative vertical movement of the posterior teeth.Öğe Ortodontik Maloklüzyonlar ve Tedavi Seçeneklerinin Değerlendirilmesi: Epidemiolojik Çalışma(2003) Sarı, Zafer; Uysal, Tancan; Karaman, Ali İhya; Başçiftçi, Faruk Ayhan; Üşümez, Serdar; Demir, AbdullahOrtodontik maloklüzyona sahip ve ortodonti kliniğine tedavi olmak için başvurmuş bireylerde görülen ortodontik maloklüzyon tiplerinin, spesifik anomali dağılımlarının tespit edilmesi ve çekimli-çekimsiz tedavilerin uygulanma sıklığının belirlenmesi amacıyla bu çalışma gerçekleştirilmiştir. Selçuk Üniversitesi Diş Hekimliği Fakültesi Ortodonti A.D.'da, Ekim 1998-Temmuz 2002 dönemi içinde tedaviye alınmış, 1602 birey araştırma kapsamına alındı. Vaka kayıt raporlarından, ortodontik maloklüzyonlar, spesifik anomaliler (open bite, konjenital diş eksikliği, gömülü kaninler, polidiastemalar), spesifik tedavi tipleri (ortognatik cerrahi uygulamaları, erişkin ve bebek dudak damak yarığı tedavileri, temporomandibuler eklem hastalıklarının tedavisi) ve ortodontik amaçla uygulanan çekim açısından tedavi yöntemleri belirlendi. Anomali tiplerinin belirlenmesinde Angle sınıflandırması göz önünde bulunduruldu. Genel olarak, vakaların % 61,69'unun Sınıfl, %28,07'sinin Sınıf II, %10,24'ünün Sınıf III maloklüzyona sahip olduğu belirlenirken; vakaların % 34,49'unun tedavisi çekim/i % 65,51'inin tedavisinin ise çekimsiz olarak yapıldığı belirlendi. Spesifik anomalilerden; open bite % 2,68, gömülü kanin % 2,18, polidiastema % 1,62, konjenital diş eksikliği % 3,05 oranında tespit edildi. Spesifik tedavi tiplerinden olan ortognatik cerrahi uygulamalarının %1,37, dudak damak yangı tedavisinin % 5,49, eklem tedavisinin ise % 5,36 oranında uygulandığı saptanmıştır. Bu değerlendirmeler ışığında, klinik hasta verilerinin belirli periyatlarda tekrar gözden geçirilip karşılaştırılmasının uygun olacağı sonucuna varıldı.Öğe Ortodontik Tedavi İhtiyacı İndeksleri Ülkemizdeki Duruma Güncel Bir Bakış(2003) Uysal, Tancan; Büyükyılmaz, Tamer; Dolanmaz, ElvanÖZET: Araştırmanın amacı; 1. Üniversitemiz Ortodonti kliniğinde tedavilerine başlanan hastaların maloklüzyonlarının mevcut Ortodontik Tedavi ihtiyacı İndekslerine göre değerlendirilmesi 2. Ülkemizde Angle sınıflamasına göre ödenen tedavi ücretleri ile indeksler rehberliğinde ödenmesi gereken ücretlerin karşılaştırılmasiı, 3. Elde edilen veriler ışığında tedavi ihtiyacı olan vakaların doğru bir şekilde belirlenmesine, dolayısıyla ülke kaynaklarının daha verimli kullanılabilmesine katkıda bulunmaktır. Çalışma materyali 2003 yılı içerisinde tedavisine başlanmış ilk 100 hastanın ortodontik modelleri ve lateral sefalometrik filmlerinden oluşturulmuştur. Mevcut uygulamayı saptamak amacıyla hastaların hangi maloklüzyon tipine göre değerlendirildikleri ve fatura bedelleri, üniversitenin döner sermaye işletmesi kayıtlarından temin edildi. Araştırmamızda ortodontik tedavi ihtiyacını belirlemek amacıyla Ortodontik Tedavi ihtiyacı indeksinin (IOTN) altbölümleri olan Dental Sağlık indeksi (DHC) ve Estetik indeks (AC) ile Norveç Ortodontik Tedavi İhtiyacı indeksi (NOTI) kullanıldı. Aynı hasta grubuna ait modeller iki araştırmacı tarafından değerlendirildi, indekslerin araştırıcı içi ve araştırmacılar arasında tekrarlanabilirlikleri Kappa istatistik yöntemi ile incelendi. Her iki araştırmacının indeksleri önemli seviyede aynı doğrulukta uygulayabildikleri belirlenmiştir. Tedavisine başlanan olgular DHC'ye göre değerlendirildiğinde %13'ünün tedaviye şiddetle ihtiyacı olduğu, %53'ünün ihtiyacının olduğu, %26'sınm ihtiyacının sınırda, %8'inin de ihtiyacının az olduğu saptanmıştır. AC'ye göre ise %33'ünün tedaviye ihtiyacı varken, %33'ünün tedavi ihtiyacının sınırda, %28'inin çok az ve %6'sının ihtiyacının olmadığı bulunmuştur. Norveç Tedavi İhtiyacı İndeksine göre incelendiğinde olguların sadece % 1 'inin tedavi ihtiyacının şiddetli, %22'sinin tedavi ihtiyacının büyük, %48'inin orta ve %29'unun da hiç tedavi ihtiyacı olmadığı belirlenmiştir. Ülkemizde mevcut kriterlere göre devlet kaynaklarından kullanılan paranın tedavi ihtiyacı indeksleri ile yapılan değerlendirmeye göre yaklaşık iki kat daha fazla olduğu saptanmıştır.
