Treatment of a Class II Patient with Four Premolar Extractions and Driftodontics in the Lower Jaw

The clinical examination of an 11.10-year-old girl in permanent dentition showed severe crowding, chewing problems and her right maxillary lateral incisor was in palatal position. The molars were in Class II relationship on both sides. An extraction treatment was planned. Upper second premolars and lower first premolars were extracted. Lower crowding was eliminated using physiological tooth movement called “driftodontics”. Slots sized 0.022 inches and self-ligating brackets were used. The patient also used a high-pull headgear for anchorage and vertical control reasons for a short period. During the correction of the lateral crossbite, a posterior bite plate was used for anterior disarticulation and anterior bite ramps were used at the last stages of the treatment to ease the correction of the curve of Spee. Class I molar and canine relationships and normal overjet and overbite achieved with good alignment of both arches and dental midlines coincided with the facial midline. The treatment results were stable after 2 years of the retention period

Treatment of Class II Division 1 Malocclusion with Extraction of Upper Central Incisors

In this case report, orthodontic treatment of a Class II malocclusion of a 12 year old girl with the extraction of discolored maxillary central incisors with root resorptions is presented

The Relationship between Force Magnitude and Optimum Tooth Movement

The force applied on the tooth and the consequential tooth movement has been a popular topic for orthodontists for many years. In this article, force magnitude, optimal tooth movement and their relationship will be discussed. Understanding the main problems of determining the optimal force and the kind of studies performed on tooth movement as well as a review of the available literature on these topics could be a basis for the application of appropriate forces in clinical orthodontics and for the design of future research

Yeni geliştirilen ağız içi maksiller molar distalizasyon apareyinin etkilerinin sefalometrik ölçümler ve model analizi ile değerlendirilmesi

YENİ GELİŞTİRİLEN AĞIZ İÇİ MAKSİLLER MOLAR DİSTALİZASYON APAREYİNİN ETKİLERİNİN SEFALOMETRİK ÖLÇÜMLER ve MODEL ANALİZİ ile DEĞERLENDİRİLMESİAdı ve Soyadı : Korkmaz SAYINSUDanışman : Yrd.Doç.Dr.Ahmet KELES Kabul Tarihi : 15.05.2000Anabilim Dalı : OrtodontiProgram : DoktoraTÜRKÇE ÖZETBu çalışmada, kliniğimizde geliştirdiğimiz ve IBMD ( Intraoral Bodily Molar Distalizer ) adını verdiğimiz ağız içinden sabit olarak uygulanan ve üst birinci büyük azı dişlerini distal yönde hareket ettirmeye çalışan apareyin dişsel ve iskeletsel etkileri, lateral sefalometrik film ve model analizleriyle incelenmiştir. 13 kız, 12 erkek toplam 25 bireyden distalizasyon öncesi ve distalizasyon sonrası, kontrol öncesi ve kontrol sonrası alınan sefalometrik filmler ve alçı modeller, araştırmamızın gerecini oluşturmaktadır. Bireylerin iskeletsel Sınıf I veya Sınıf II maloklüzyona sahip olup, dişsel bilateral Sınıf II büyük azı ilişkisi göstermesine, ikinci büyük azı dişlerinin sürmüş olmasına, alt çenelerinde yer darlığının bulunmamasına ve vertikal yön büyüme kriterlerinin normal veya düşük değerler göstermesine dikkat edilmiştir. 25 bireyden 15'i tedavi grubuna, kalan 10 birey ise kontrol grubuna dahil edilmiştir. Tedavi ve kontrol süresince meydana gelen değişiklikleri belirlemek amacı ile lateral sefalometrik film analizleri için 11 açısal, 10 doğrusal ve 1 oransal olmak üzere toplam 22 parametre ölçülmüştür. Model analizi için 1 açısal ve 1 doğrusal toplam 2 parametre değerlendirilmiştir.Her grup içindeki bireylere ait distalizasyon veya kontrol öncesi ve sonrası değerler arasındaki farkların grup içi istatistiksel önemi, Wilcoxon testi ile belirlenmiştir. Tedavi ve kontrol grupları arasındaki farkların önemi, Mann Whitney U testi ile değerlendirilmiştir.Lateral sefalometrik filmlerin değerlendirilmesi ile 14 parametrede istatistiksel olarak önemli değişiklikler bulunmuştur. Buna göre; üst birinci büyük azı dişleri, gövdesel olarak ortalama 5.28 mm distal yönde hareket etmişlerdir. Üst birinci küçük azı dişleri, mezial yönde ortalama 4.1 mm hareket etmiş, distal yönde 3.5° devrilmiş, ve 3.75 mm uzamıştır. Üst orta kesici dişler, 3.6 mm labial yönde hareket etmiş ve 5.13° labial yönde devrilmiştir. SNB açısı azalmış, ANB açısı artmıştır. Alt çene düzleminin S-N düzlemi ile yaptığı açıda (4. S-N/Go-Me Açısı) ortalama 1.6° artış, alt ön yüz yüksekliğinin total ön yüz yüksekliğine oranında (7. ANS-Me/N-Me Oranı) ortalama % 0.95 artış ve oklüzal düzlemin S-N düzlemi arasındaki açıda (12. Okl.Düz./S-N Açısı) ortalama 1.27° artış görülmüştür. Alt birinci büyük azı dişinde, (20.`6/Go-Me Uzunluğu) ortalama 1.7 mm artış bulunmuştur. Alt çene aşağıya ve geriye rotasyon yapmıştır. Overjet miktarında artma, overbite miktarında azalma tespit edilmiştir.Model analizi sonuçları değerlendirildiğinde, üst birinci büyük azı dişlerinde, distalizasyon sırasında rotasyon ve transversal yönde değişiklik görülmemiştir.IBMD apareyi ile, amacımıza uygun olarak hasta uyumuna gerek duyulmadan üst birinci büyük azı dişlerinde gövdesel olarak distal yönde hareket elde edilmiştir. EVALUATION OF A NEWLY DEVELOPED INTRAORAL MAXILLARY MOLAR DISTALIZATION APPLIANCE BY MEANS OF CEPHALOMETRIC AND MODEL ANALYSISSUMMARYIn the present study, a new intraoral appliance named IBMD ( Intraoral Bodily Molar Distalizer ) was designed which is used to move the upper first molar teeth to the distal direction without any tipping.The study material consisted of 100 lateral cephalometric films and 50 model photocopies that have been taken before and after distalization and control periods from 13 females and 12 males, a total of 25 patients. All patients have skeletally Class I or Class II malocclusions and Class II molar relationships on both sides, second molars were erupted, lower arch was well alligned and showed normal or sagitally directed growth pattern. Patients were divided into two groups named as treatment and control. In order to define the changes taking place in the treatment and control groups, the lateral cephalometric films and the model photocopies were analysed. 22 parameters ( 11 angular, 10 lineer and 1 rational ) have been measured for the cephalometric analysis. For the model analysis, 2 parameters ( 1 angular and 1 lineer ) were measured.The statistical significance of the changes in the measurements during the observation period of each patient in both groups has been determined by Wilcoxon test. The statistical significance of the differences between the treatment and the control groups has been compared by the Mann Whitney U test.After the analysis of the lateral cephalometric films 14 parameters out of 22 parameters showed significant changes. These important changes achieved by the IBMD appliance are as follows: Upper first molars were moved distally by an average of 5.28 mm without any tipping and extrusion. Upper first premolars were moved mesially by an average of 4.1 mm, tipped 3.5° distally and extruded by 3.75 mm. Upper central incisors were proclined by an average of 3.6 mm and tipped 5.13° labially. SNB angle was decreased and the ANB angle was increased. The angle between the mandibular plane and the S-N plane (4. S-N/Go-Me Angle) was increased by an average of 1.6°, the ratio between the anterior lower facial height and the anterior total facial height (7.ANS-Me/N-Me Ratio) was increased by an average of 0.95 % and the angle between the occlusal plane and the S-N plane (12. Occ.Pl./S-N Angle) was increased by an average of 1.27°. Lower first molar teeth (20.`6/Go-Me Distance) were extruded by an average of 1.7 mm. Downward and backward rotation of the mandible was seen.After the analysis of the model photocopies, no rotation and no transversal change was seen in the upper first molar teeth during distalization process. We achieved our goals with IBMD appliance and achieved bodily molar distalization without patient cooperation

Cephalometric Evaluation of Skeletal and Dental Effects of Modified Facemask

The aim of this study was to examine the effects of the newly modified maxillary protraction facemask. 15 patients, having an average age of 12.42 ± 1.87 years, presenting Class III malocclusion with maxillary retrognathism were treated for 7.5 ± 1.02 months. Rapid palatal expansion was performed for 7 days with a full coverage acrylic cap splint type appliance. At the 7th day, protraction therapy was started with the combination of a specially designed face bow and Petit type facemask. The face bow was bent upward to raise the point of force application to pass through the center of resistance of the maxilla. A total of 1000 g (500 g on each side) of protrusive force was applied and the patients were instructed to wear the facemask for 16 h/day. Wilcoxon signed rank test was carried out to evaluate 48 parameters measured on cephalometric radiographs. Results showed that the maxilla was displaced anteriorly without rotation. Maxillary occlusal plane showed a clockwise rotation. Maxillary incisors were extruded and retroclined. Mandible was displaced downward and backward. In conclusion, by introducing our new face bow design, we were able to protract the maxilla bodily and at the same time to have a more effective force-moment system where the whole protractive force was utilized in protracting the maxilla

The Incısor Incunatıonn And Soft Tıssue Changes Induced By Jasper Jumper Applıance

The purpose o1 this study is to evaluate the dental and soft tissue changes in patients treated with the Jasper Jumper appliance which was filled with sectional arches. The study sample consisted of 30 subjects (15 treated, 15 untreated) with skeletal and dental Class II malocclusion. Our study was carried out on 60 lateral cephalometric films which were taken before placement and after removal of the Jasper Jumper appliance in the treatment group, and at inital and six months follow-up in the control group. The patient selection criteria were as follows skeletal and dental Class II malocclusion characterized by retrognathic mandible, normal or low angle vertical growth pattern, and post-peak growth period. The statistical assessment of the data suggested the following conclusions. The mandibular incisors were protructed and intructed while the maxillary incisors were retructed and extructed. The occlusal plane was rotated in clockwise direction as a result of dentoalveoler changes. Overbite and overjet were reduced in all patients. Soft tissue profiile improved significantly. As a result of the overjet reductiuon due to the retrusion of the upper incisors, the upper lip moved back and the lower lip no longer captured at the back of the upper incisors. Moreover, the lower incisors which are proclined supported the lower lip. Lip strength decreased favorably as a result of the upper incisors retrusion. The results of this study revealed that in late-adolescent patients Jasper Jumper appliance corrected Class II discrepancies mosbly through dentoalveolar changes. It is suggested that this treatment method could be an alternative to orthognathic surgery in borderline Class II cases

Is Orthodontıc Treatment Success Affected By Personalıty Traıts Or Psycologıcal Status

A successful orthodontic treatment depends on a variety of factors. Cooperation of the patient during orthodontic treatment is a major determinant of a successful treatment result. Predicting patient cooperation could be helpful in anticipating problems that might arise during orthodontic treatment. In previous studies, it has been hypothesized that personality traits which can be determined by personality tests, and patient's psychological status might at least partly determine a patient's motivation for orthodontic treatment. However, other studies that used persponality variebles to predict adherence during orthodontic treatment have been unsuccessful in obtaining a clear answer or have found contradicting results. More research is needed to investigate the effect of patient's personality traits or psychological status on patient cooperation

Prosthodontic Management of a Patient with Oligodontia: A Case Report

Oligodontia or severe hypodontia is a rare developmental dental anomaly which is described as congenital absence of 6 or more teeth excluding the third molars. In this case report, the treatment of a 31-yearold woman with congenital absence of 9 permanent teeth is described. The treatment with occlusal appliance and fixed a partial dentures ended up in functional and aesthetic results