Cephalometric Morphology of Turkish Children with Class II Malocclusion

Aim:To investigate the morphology of Class II malocclusion in Turkish children, to compare with Class I malocclusion sample and to identify possible sex differences.Subjects and Methods:Lateral cephalometric radiographs of 100 Turkish children with Class II malocclusion and 100 Turkish children with Class I malocclusion taken in centric occlusion were selected. The mean age of the patients were 12.2±2.1 years for Class II group and 12.3±2.4 years for Class I group. A cephalometric software system was used to perform lateral cephalometric evaluation. Independent-samples t test and Mann Whitney-U test were used for statistical analysis.Results:SNB Angle, ANB Angle, Facial Depth Angle, Condylion-Gnathion Length, Corpus Length, Convexity, Lower Lip to Esthetic Plane Distance, Overjet and Overbite showed statistically significant differences between the Class II and Class I children. The mandibular incisors were more proclined in Class II group. There was no significant difference in the vertical growth pattern between the groups. In Class I group, FMA Angle, Lower Facial Height Angle, Corpus Length, Condylion-Gnathion Length, Condylion-A Length, Anterior Facial Height and Posterior Facial Height were found to be smaller in females. In Class II group, SNA Angle, SNB Angle, Maxillary Depth, L1-NB Angle and U1-SN Angle were found to be smaller in males.Conclusion:The results of the study showed that the majority of the Class II pattern in Turkish patients was due to mandibular retrusion, and on average the children had dolichofacial growth pattern

White Spot Lesions and Orthodontics

The aim of current study was to introduce a review on white spot lesions which may appear during the course of orthodontic treatment

Evaluation of the Effect of Fixed Anterior Biteplane Treatment on Temporomandibular Joint in Patients with Deep Bite

Objective:To investigate the effects of fixed anterior biteplane treatment on temporomandibular joint in deep bite patients.Methods:The sample comprised 17 Class II patients with deep bite and decreased lower anterior facial height. The average patient age was 9.9±0.9 years. Transcranial temporomandibular joint radiographs were obtained from the subjects before (T0) and after fixed anterior biteplane treatment (T1). Anterior joint space, posterior joint space, superior joint space, anteroposterior thickness of the condylar head, vertical height of the articular fossa, and the articular fossa slope were measured on temporomandibular joint radiographs to evaluate the position of the mandibular condyles in the glenoid fossa.Results:The average treatment duration was 8.5±2.1 months. Slope of the articular fossa, vertical height of the articular fossa, anteroposterior thickness of the condyle, posterior joint space, superior joint space, and anterior joint space showed no statistically significant difference between T0 and T1 (p>0.05).Conclusion:Fixed anterior biteplane appliance treatment did not change the condyle fossa relationship in Class II deep bite patients at the time of appliance removal

Maxillary protraction in adult cleft lip and palate by a rigid external distraction device with dentoskeletal anchorage

Objective: The objective is to evaluate the effects of maxillary distraction osteogenesis (DO) in an adult patient with unilateral cleft lip and palate (UCLP) by using a rigid external distraction (RED) device with dentoskeletal anchorage. Method: 31-year-old male patient with UCLP with severe maxillary hypoplasia, dolichofacial growth pattern, negative overjet and 1.5 mm openbite. After pre-surgical orthodontic treatment, an intra-oral appliance was modified to prevent extrusion of the molars and clockwise rotation of the mandible. Stainless steel plates were soldered bilaterally to the intra oral appliance at the level of canines. During surgery, miniplates were inserted in the maxillary segment and fixed to the plates of the intra oral appliance with screws. Results: The mean distraction length was 12 mm immediately after DO. SNA increased from 73o to 82o after distraction. A significant advancement of the maxilla and correction of the sagittal Class III skeletal relationship was achieved. The vertical position of the mandible and the face was kept stable, and the soft tissue profile became more balanced. Conclusion: This intra oral appliance design achieved desired skeletal changes during maxillary protraction with RED device in dolichofacial CLP patient. Occlusion and facial profile changes was found to be stable in 1-year follow-up.PubMe

Upper Airway Features Of Unilateral Cleft Lip And Palate Patients In Different Growth Stages

Objectives: To compare growth-related changes of skeletal and upper airway features of unilateral cleft lip and palate subjects (UCLP) with non-cleft control (NCC) subjects by using lateral cephalograms. Materials and Methods: The sample comprised 238 subjects, collected cross-sectionally, divided into 2 groups: 94 with UCLP, and 144 NCC, subdivided into 4 groups according to their growth stages by using cervical vertebral maturation stage (CVMS). The subgroups were defined as early childhood (stage 1), prepubertal (stage 2: CVMS I and II), pubertal (stage 3: CVMS III and IV), and postpubertal (stage 4: CVMS V and VI). Results: The maxilla was more retrognathic at stages 2, 3, and 4 in females with UCLP. The mandible was more retrognathic in UCLP at stage 1 in males, and stages 2 and 3 in females. ANB (angle between NA plane and NB plane) was significantly smaller in UCLP subjects at stage 4 for both sexes. A vertical growth pattern was seen in UCLP subjects except males at stages 2 and 3, and females at stage 2. Posterior airway space was significantly narrower at all stages in males and after stage 1 in females. Middle airway space was significantly wider at all stages in females and after stage 1 in males. Epiglottic airway space was significantly narrower in males at stage 3. Conclusions: Age-and sex-dependent differences in skeletal morphology and upper-airway widths of the UCLP subjects were identified when compared with controls.WoSScopu

Effects of three disinfection solutions on residual monomers released from resin nanoceramic CAD/CAM blocks

The aim of this study was to evaluate the effects of three disinfection solutions on the amount of monomers released from resin nanoceramic CAD/CAM blocks using high performance liquid chromatography (HPLC). Forty resin nanoceramic CAD/CAM (Cerasmart, GC, Japan) samples (12x14 × 2 mm) were divided into four groups; each group was disinfected using one of four solutions (Group 1: no disinfectant; Group 2: 70 % ethanol; Group 3: 2 % glutaraldehyde; and Group 4: 1 % sodium hypochlorite) for 5 min. Analysis of residual monomers (UDMA and Bis-EMA) amounts was performed using an HPLC instrument (Dionex Ultimate 3000, Thermo Fisher Scientific). After 30 days, the amounts of monomers found were as follows: 14.54 ppm for Group 1; 9.28 ppm for Group 2; 10.60 ppm for Group 3; and 2.76 ppm for Group 4 (the smallest monomer amount) (p < 0.001). Disinfection of indirect restorations prior to cementation can reduce the amount of residual monomers remaining from resin nanoceramic CAD/CAM blocks

The Spread of Fake News in Turkey: Predictors of Fake News Questioning and Sharing

The phenomena that have emerged with a dramatic increase in the speed of technologicaldevelopment have affected many aspects of social and political life. One of these facts is theextraordinary growth in the amount and access to information. However, this informationmay not always reflect reality in life. With the development of technology, especially insocial media, it has become easier to spread fake information. In the literature, fake news hasbeen mostly studied in the media field. However, it is crucial to address the spread of fakenews with a social psychological point of view. Therefore, in this study, we aimed to examinethe relation between fake news and social-psychological variables. We archived real socialmedia (facebook and twitter) posts and measured various psychological characteristics ofparticipants during the 31 March 2019 local elections of Turkey. Additionally, we developedthe Fake News Questioning Scale to measure the tendency of questioning whether news onsocial media is fake or not and examine its relations with thinking styles, party affiliations,identification with ethnicity, social dominance orientation, right-wing authoritarianism,conspiracy beliefs, and intergroup threat. As a result, we found that intuitive and analyticalthinking styles predict the questioning of news, but social dominance orientation, right-wingauthoritarianism and conspiracy beliefs did not. We discussed the motivations behind thetendency to questioning and sharing fake news from a social psychological perspective

Evaluation Of Changes In The Maxillary Alveolar Bone After Incisor Intrusion

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