Belma Işık Aslan

Treatment effects of the Forsus Fatigue Resistant Device used with miniscrew anchorage

OBJECTIVE To evaluate the dentofacial effects of the Forsus Fatigue Resistant Device (FRD) used with miniscrew anchorage (FRDMS) and compare them with those of conventional FRD and an untreated Class II control group. MATERIALS AND METHODS The sample consisted of 48 Class II subjects. Sixteen patients (13.68 ± 1.09 years of age) were treated with FRDMS, whereas 17 subjects (14.64 ± 1.56 years of age) were treated with only FRD. Also, a control sample of 15 untreated Class II subjects (14.13 ± 1.50 years of age) was constructed. Angular and linear measurements were made on 96 lateral cephalograms. Paired t, one-way analysis of variance, and Tukey tests were used for statistical analysis. RESULTS Class I molar relationship and overjet correction were achieved in an average period of 6.5 ± 1.97 and 5.5 ± 1.80 months in the FRDMS and FRD groups, respectively. No skeletal effect was determined in both treatment groups. Greater overbite correction was found in the FRD group. Retrusion and extrusion of maxillary incisors, distalization of maxillary molars, and extrusion of mandibular molars were significant in both treatment groups. Labial tipping of mandibular incisors was significantly greater in the FRD group than in the FRDMS group. CONCLUSION Overjet and molar correction was totally dentoalveolar. Unfavorable labial tipping of mandibular incisors was effectively minimized with the usage of miniscrews.

Maxillary advancement with internal distraction device in cleft palate patients.

This study aimed to evaluate the results of maxillary advancement by using internal Le Fort 1 distractors on six patients with unilateral cleft lip and palate who had maxillary hypoplasia. The retrognathic maxilla of five patients were protracted with distractor bilaterally, and asymmetric advancement was performed in one patients. A removable intraoral acrylic appliance was used as an anchorage appliance in two patients, and Ragno fan-type expander appliance was used in the others to prevent maxillary collapse during the distraction period. The maxilla of one patient was not distracted successfully due to the maxillary collapse in result of breaking the removable anchorage appliance away. Lateral cephalograms were evaluated before 3 and 12 months after distraction. A desired level of advancement was attained in five patients. In one patient distraction was not performed due to the maxillary collapse. In one of the five patients with a wide oronasal fistula, the size of the fistula was decreased with asymmetric advancement of right and left maxillary segments. Following the retention period of 12 months, the results were stable. It was concluded that effective and easy distraction is possible with internal Le Fort 1 distractors in cleft lip and palate patients who requires maxillary advancement.

Treatment Effects and Posttreatment Follow-up of Miniscrew Anchorage-Supported Forsus FRD Appliance: Report of 2 Severe Class II Cases

ABSTRACT This case report presents the treatment and posttreatment follow-up of 2 boys with severe skeletal Class II malocclusion with miniscrew anchorage-supported Forsus Fatigue Resistance Device (FRDMS). Miniscrews were inserted between the mandibular canine and first premolar root area bilaterally. The FRDMS treatment duration was 13 months in the first case and 11 months in the second case. The patients were treated with fixed orthodontic treatment afterward. The first patient was followed up for 1 year and 6 months and the second patient for 2 years and 8 months after fixed orthodontic treatment Essix retainers were worn full-time for a period of 6 months and only at nighttime for the following 6 months in both cases after the fixed appliances. Lower incisor proclination was observed in both cases, although lower dentition anchorage was reinforced with miniscrews during Forsus FRD treatment. Favorable sagittal movement of the mandible was achieved in only 1 case. Overjet and molar correction were ma...

Maxillary protraction in a case with miniscrew bone anchorage

Four miniscrews were placed into the available inter-root area, two in the posterior and the other two in the anterior region in the maxilla as skeletal anchorage for facemask protraction in a girl 11 years and 11 months old with maxillary retrusion. No tooth support was used for the protraction of the maxilla. Applying orthopedic forces directly to the maxilla resulted in a 2 mm maxillary advancement. Undesired skeletal and dental effects of facemask therapy were eliminated with this new technique. Skeletodental changes in response to the miniscrew-anchored facemask treatment are reported in the present case.

Effects of the reciprocal mini-chin cup appliance

The aim of this prospective study was to evaluate the dentofacial effects of the reciprocal mini-chin cup (RMCC) appliance in subjects with pubertal growth and development potential (group 1) and in subjects that had completed this period (group 2). Eighteen patients (13 females, five males) with an Angle Class II division 1 and nine patients (six females, three males) with a Class II division 2 malocclusion, with mandibular dentoalveolar retrusion and optimal vertical facial dimension were included. A control group consisting of 14 subjects (nine females, five males) with pubertal growth and development potential was constructed for comparison with group 1. In both treatment groups a RMCC was used. A Class I molar relationship was achieved in an average period of 5.11 months in group 1 and 10.57 months in group 2. From lateral cephalometric tracings, beside the angular and linear parameters, eight parameters that determined the ratio of the skeletal and dental effects of RMCC were measured and statistically evaluated. A paired comparison t-test was used to assess the differences in each group and a Students t text to evaluate the differences between the groups. In both groups, no effect of RMCC was found on either the maxilla and/or the sagittal position of the mandible. In group 1, lower anterior face height was increased more compared with group 2; the mandibular plane angle increased and the mandible developed mostly in the vertical dimension. While a Class I molar relationship and correction of the overbite and overjet were achieved in both groups, a greater correction of overjet was found in group 1. Retrusion of the upper incisors without extrusion, protrusion, or proclination of the lower incisors, distalization of the upper molars, mesialization and extrusion of the lower molars and mesialization of the mandibular dentoalveolar structures were observed in both groups. Contributions to the correction of overjet and molar relationship were mostly dentoalveolar in both groups.