Dental and Alveolar Inclination after Asymmetric Rapid Maxillary Expansion in True Unilateral Posterior Crossbite Cases

Aim:The objective of the present study was to evaluate maxillary dental and dentoalveolar changes in true unilateral posterior crossbite cases treated with asymmetric rapid maxillary expansion.Subjects and Methods:The study group comprised 38 patients in the permanent dentition divided into two groups as treatment (experimental) and control. In treatment group, for asymmetric rapid maxillary expansion, an acrylic bonded appliance was used. Orthodontic study models were obtained before RME (T1), after expansion (T2), and after retention period (T3) in treatment group and at the beginning of control and at the end of control in control group. A line of barium sulphate solution was drawn between the upper first molars on the models, and radiographs were taken. Buccal tipping of the molar crowns and alveolar processes were evaluated on the radiographic images of the models.Results:In the treatment group, there were statistically significant increases both after expansion (11.22°) and retention (9.65°) periods in the alveolar inclination angle (β) (p0,05).Conclusion:The asymmetric rapid maxillary expansion with a bonded RME appliance with full occlusal coverage of all upper teeth was found to be effective in correcting true unilateral posterior crossbites. The tipping of the first molars can be relatively decreased by this appliance

Hybrid Rapid Palatal Expansion With 2 Mini- Screws: A Case Report

A hybrid expander is a newly designed bone-anchored expander consisting of 2 mini-screws and palatal acrylic; it does not cover any teeth. The aim of this case report is to present the treatment of a patient with transversal maxillary deficiency by hybrid expander. An 11.4-year-old female patient came to our clinic complaining about the appearance of her teeth. She had a narrow maxillary arch, unilateral dental crossbite, anterior dental crowding, and dental Class II canine and molar relationships on both sides. Two self-tapping mini-screws were placed between the first molar and second premolar on the palate under minimal local anesthesia. After 1 week, this appliance was bonded to the mini-screws with Transbond XT (3M Unitek, Monrovia, CA, USA) resin. The expansion screw was activated twice a day for 1 week and then once a day until the expansion was completed. After the expansion period, the brackets were bonded to the teeth without removing the hybrid expander. Sufficient maxillary expansion had been achieved without buccal tipping of the posterior teeth, and the midline diastema had closed spontaneously. This newly designed hybrid expander was efficient in correcting a transverse maxillary deficiency without any of the side effects found with conventional rapid maxillary expanders. The most important advantage of this appliance is that clinicians can implement expansion and bonding procedures at the same time

Sabit ortodontik tedavinin DMFT indeksi ve beyaz nokta lezyonu oluşumu üzerine etkisi

Amaç: Bu çalışmanın amacı sabit ortodontik tedavinin DMFT indeksi ve beyaz nokta lezyonu oluşumu üzerine etkisini değerlendirmektir.Gereç ve Yöntem: Bu çalışmaya sabit ortodontik tedavi gereksinimi olmayan 26 birey (kontrol: Grup A) ve sabit ortodontik tedavi görecek olan 30 birey (test: Grup B) dahil edildi. Grup B’ deki bütün hastalar 0,018 inç slot preadjusted sabit ortodontik apareyler ile tedavi edildi. Tüm bireyler çalışma başlangıcında (T1) ve sonrasında (T2) beyaz nokta lezyonu (BNL) görülme sıklığının tespiti amacıyla Gorelick indeksine göre klinikte muayene edildi. Her birey için T1 ve T2’de DMFT (Çürük, Dolgulu ve Eksik Diş Sayısı) indeksi değeri hesaplandı. DMFT indeksi değerlendirmesinde klinik muayenede Dünya Sağlık Örgütü (DSÖ) kriterleri ve bitewing radyograflar kullanıldı. İstatistik analiz için Kruskal-Wallis ve Mann-Whitney U testleri kullanıldı.Bulgular: İki grup arasında DMFT indeksi değişimi anlamlı bulunmazken, Grup B’de BNL oluşumu (%66,6) Grup A’ya göre (%26,9) anlamlı derecede yüksek bulundu (p=0,000). Grup B’de BNL oluşumu ve DMFT indeksi ve cinsiyet arasında ilişki bulunamadı. Sabit ortodontik tedavi sonrasında en çok BNL oluşumunun alt birinci büyük azı dişler (%28,8), alt ikinci küçük azı dişler (%23,2) ve üst yan kesici dişlerde (%19,2) oluştuğu belirlendi.Sonuç: Sabit ortodontik tedavi görmekte olan  bireylerde beyaz nokta lezyonu oluşumunun önlenmesi için bireylerin ağız bakım alışkanlıklarının iyileştirilmesi ve ilave flor desteğinin arttırılmasının gerekli olduğu düşünülmektedir.Anahtar kelimeler: DMFT, Beyaz nokta lezyonu, Sabit ortodonti tedavisi. THE EFFECT OF FIXED ORTHODONTIC TREATMENT ON DMFT INDEX AND WHITE SPOT FORMATION AbstractAim: The aim of this study was to assess the effect of fixed orthodontic treatment on DMFT index and white spot lesion formationSubjects and Methods: Fifty six patients (Group A: 26 subjects; Group B: 30 subjects) who were undergoing fixed orthodontic treatment were invited to participate in this study.  All patients in Group B were treated with a 0.018 inch slot preadjusted fixed orthodontic appliances. An examiner used the Gorelick index for assessment of white spot lesion (WSL) on the buccal surface of teeth before (T1) and after (T2) treatment. The DMFT index value was recorded for each subject at T1 and T2. The WHO (World Health Organization) criteria and bitewing radiographs were utilized to diagnose the carious status of the subjects. Kruskal-Wallis and Mann-Whitney U tests were used to compare the groups.Results: No differences was found between the groups in terms of increased DMFT. On the other hand, The mean increase in WSL percentage in Group B (%66,6) and Group A (%26,9), respectively (p=0,000). In Group B, gender not significantly related to the DMFT index and development of new WSL. The greatest prevalence of WSLs was found in the mandibular first molars (%28,8), followed by the mandibular second premolars (%23,2) and the maxillary lateral incisors (%19,2).Conclusion: A more effective oral care support should be provided to subjects and caries preventive procedures (fluor therapy) should be done.Key words: DMFT, White Spot Lesion, Fixed Orthodontic Treatmen

Orthodontic Treatment of a Case with Maxillary Impacted Canines and Congenitally Missing First Premolars

Depending on their roles in oral functions and smile and face esthetic, impaction of maxillary canines is an important problem that should be treated by a conservative approach. In this case report, orthodontic treatment of a patient (9-year 5- months) with congenitally missing one maxillary premolar on both side and impacted two maxillary canines were introduced. The canines were impacted in different depth and angulations; right canine was almost parallel to occlusal plane. Following the determination of the teeth were not erupting by a panoramic radiograph taken in the sixth month after first application, patient was accepted to fixed orthodontic therapy. Primary canines were extracted. Rotations of upper premolars and molars were corrected and spaces were organized. However no traction was applied to maxillary canines, it was determined that they were erupting in the following panoramic radiograph. When they are fully erupted they were bonded. The treatment finished in three years and seven months time. This case shows the importance of early diagnose of impacted maxillary canines and their ability to erupt by uprighting when their spaces are prepared

Birinci büyük azı dişlerde çürük gelişme riskinde sabit ortodontik tedavinin etkisi

Amaç: Bu çalışmanın amacı sabit ortodontik tedavinin daimi birinci büyük azı dişin çürük riski üzerine etkisini detaylı olarak değerlendirmekti.Gereç ve Yöntemler: Sabit ortodonti tedavisi gören 74 birey (13-17 yaş) bu çalışma kapsamında incelendi. Daimi birinci büyük azı dişlerin durumu üç farklı zamanda Dünya Sağlık Örgütü (DSÖ) kriterleri kullanılarak değerlendirildi; T0=Sabit ortodontik tedaviden hemen önce, T1=Sabit ortodontik tedaviden hemen sonra, T2: Sabit ortodontik tedaviden en az 12 ay sonra. Risk değerlendirmesi yapılırken klinik muayene ve bitewing radyograflardan yararlanıldı. Çürük risk değerlendirmesi; birey, diş, yüzey ve white spot lezyonlar (WSL) bazında gerçekleştirildi. Birinci büyük azı dişlerin bukkal yüzeylerinde oluşan WSL’ı Gorelick indeksine göre incelendi.Bulgular: Çalışma sonuna kadar takibi yapılan 60 hastanın (35 kız, 25 erkek) yaş ortalaması T0’ da 14,7±0,8 olarak bulundu. Daimi birinci büyük azı dişi çürükten etkilenen bireylerin yüzdesinin T0’ da %58,3, T1 zamanında %66,6 ve T2 zamanında %73,3 olduğu bulundu (p=0,000). T0’ da daimi birinci büyük azı dişin DMFT ortalaması 1,50 iken, T1’ de 1,66 ve T2’ de 1,78 olduğu bulundu. T0’ da çürükten en çok etkilenmiş diş yüzeyi okluzal olarak bulunurken, tedavi süresince ve sonrasında (yaklaşık 37 ay) ara yüz çürüklerinin artış gösterdiği görüldü. Bireylerde WSL görülme sıklığı T0’ da %25, T1’ de %58,3 ve T2’ de ise %50 olarak bulundu (p=0,000).Sonuç: Sabit ortodontik tedavi sırasında ve sonrasında daimi birinci büyük azı dişin çürüme riskinin arttığı söylenebilir

Effects of the Activator and Twin Block on Facial Soft Tissue Thickness in Class II Division 1 Patients

Objective:The purpose of this study was to evaluate and compare the effects of the activator and Twin Block appliances on soft tissue thickness in Class II division 1 patients.Materials and Methods:Soft tissue thickness measurements were obtained from standardized lateral and posteroanterior cephalograms taken at the beginning and end of the time the appliances were used. The study patients consisted of 3 different groups: the control group (group I) comprised 30 patients (13 male, 17 female; mean age: 12.15 6 0.61 years); the activator group (group II) comprised 30 patients (12 male, 18 female; mean age: 12.15 6 0.68 years); and the Twin Block group (group III) comprised 30 patients (14 male, 16 female; mean age: 12.10 6 0.62 years). In the present study, 12 linear anthropologic points were measured. Intragroup comparisons were analyzed using the paired samples t test; and for the intergroup comparisons, the ANOVA and Tukey tests were used at the p , 0.05 level.Results:According to the intragroup comparisons, there were significant differences in groups II and III in the skeletal measurements (SNB, ANB, L1-NB, UL-E plane, and LL-E plane), and in the soft tissue thickness measurements (labrale superius, stomion, labiomental, pogonion, and gnathion) (p,0.05). When the treatment changes were compared between the groups, there were no significant differences between groups II and III. However, between groups I and II or III there were significant differences in the measurements of the SNB, ANB, L1-NB, UL-E plane, LL-E plane, and labiomental soft tissue thicknesses.Conclusions:Both the activator and Twin Block therapies improved the mandibular advancement in Class II patients and affected the soft tissue thickness in a similar way; only the labiomental region was affected

Sınıf II subdivizyon maloklüzyonda mandibular asimetrinin değerlendirmesi

Amaç: Bu çalışmanın amacı Sınıf II subdivizyon maloklüzyonlardaki mandibular iskeletsel asimetrilerin prevalansını, Sınıf I ve Sınıf II maloklüzyonlarla karşılaşırmalı olarak belirlemektir.Gereç ve Yöntemler: Çalışmaya her biri 40’ar bireyden oluşan 3 grup dahil edilmiştir: bir Sınıf I oklüzyon grubu (14 erkek ve 26 kadın; yaş ortalaması 14.68±1.86), bir Sınıf II oküzyon grubu (12 erkek, 28 kadın ; yaş ortalaması 14.02±1.74), ve sınıf II subdivizyon oklüzyon grubu (19 erkek and 21 kadın; yaş ortalaması 14.32±2.42). Her bir hasta için panoramik radyogramlarda(OPG) sekiz doğrusal ve bir açısal ölçüm yapılmıştır. Sağ ve sol ya da Sınıf I ve Sınıf II tarafların ölçümlerini kıyaslamak için Wilcoxon testi kullanılmıştır. Grup içi değerlendirmelerde P < 0,05 seviyesindeki asimetrilerin kıyaslanması için Kruskal-Wallis ve post-hoc Mann- Whitney U testleri kullanılmıştır.Bulgular: Sınıf I ve Sınıf II veya subdivizyon grubundaki bireylerin Sınıf I tarafları ve Sınıf II tarafları veya sağ sol tarafları arasında, yalnızca gonial açıda anlamlı farklılık gözlenmiştir (P < 0.05). Sınf II subdivizyon grubundaki kondil boyları ve korpus uzunluklarındaki asimetri indeksleri diğer gruplara kıyasla daha büyüktür (P < 0.05) ve diğer asimetri indeksleri açısından gruplar arasında anlamlı bir farklılık gözlenmemiştir (P < 0.05).Sonuçlar: Sınıf II subdivizyon grubundaki bireyler, Sınıf I ve Sınıf II gruplarındakilere kıyasla daha asimetrik mandibulaya sahiptir

Evaluation of Enamel Surface Roughness after Various Finishing Techniques for Debonding of Orthodontic Brackets

Objective:The aim of this study was to evaluate the surface roughness of enamel after debonding with various types of burs.Methods:The buccal surfaces of 20 mandibular incisors for each group of bur were subjected to profilometer analysis, and three parameters of surface irregularity were recorded. After bracket debonding, adhesive remnants were removed by tungsten carbide burs in low-speed, high-speed, and stainbuster settings. The samples were evaluated at pre-treatment (on sound enamel) (T1) and post-treatment (T2) by a profilometer. The specimens were measured twice, and the mean values were recorded.Results:The results were analyzed in intra-group comparisons with paired t-tests and in inter-group comparisons with one-way ANOVA and Tukey’s HSD test. All resin removal techniques significantly increased enamel surface roughness (p<0.05). According to one-way ANOVA, there were significant differences in the effect of enamel surface roughness between all methods (p<0.05). The high-speed bur caused the maximum roughness values and the stainbuster bur caused the minimum roughness values in all the parameters (Ra, Rz, and Rq).Conclusion:The three types of burs used for finishing methods revealed significant differences in the enamel surface after debonding. However, the stainbuster bur created smoother surfaces than the other applied methods

Mechanical Properties of Different Aesthetic Archwires

Objectives:In response to patient demands for better aesthetics in orthodontics, manufacturers have developed different aesthetic wires and brackets. The aim of this study were to evaluate the mechanical properties of archwires. Thus, color properties and surface roughness of the different aesthetic archwires were analyzed.Materials and Method:Seven brands of aesthetic archwires were evaluated for color and roughness measurements. The color measurement of each sample was performed using a spectrophotometer. A profilometer was used to measure surface roughness. For roughness, Ra (average roughness), Rq (root mean square roughness), and Rz (maximum peak to valley height) parameters were used. A Kruskal-Wallis test was used to compare intergroup differences. For pairwise comparisons, a Mann- Whitney U test was used.Results:Intergroup comparisons revealed remarkable differences between groups for all parameters. The surface roughness and Commission Internationale de l’Eclairage L*a*b* color values were statistically different from each other for all intergroup comparisons (p , .001).Conclusion:Having different color options for aesthetic wires gives clinicians an advantage in terms of the ability to choose archwires that are more harmonious with individual teeth in terms of bracket color and thus provide a more aesthetic appearance