kaygisiz, emine gazi university - faculty of dentistry - department of orthodontics, Ankara, Turkey , bozkaya, erdal gazi university - faculty of dentistry - department of orthodontics, Ankara, Turkey , tortop, tuba gazi university - faculty of dentistry - department of orthodontics, Ankara, Turkey , ercan, dervis emre gazi university - faculty of dentistry - department of orthodontics, Ankara, Turkey , yüksel, sema gazi university - faculty of dentistry - department of orthodontics, Ankara, Turkey

Long term results of double plate appliance and facemask combination in the treatment of Class III malocclusion: cephalometric analysis

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OBJECTIVE: The aim of this study was to evaluate the long term results of double plate appliance and facemask combination (DPA-FM) in treating Class III malocclusions when growth potential of the patients was close to cease or ceased. MATERIALS AND METHOD: The material consisted of the pretreatment (T1), posttreatment (T2), and long term (T3) lateral cephalometric and the hand-wrist radiographs of 13 patients (5 females, 8 males; mean chronological age: 11.1 }1.40 years) with skeletal and dental Class III malocclusion treated with DPA-FM combination. The mean DPA-FM treatment time was 10.8 }1.88 months. The hand-wrist growth and developmental stages were MP3u or Ru at T3. The mean follow-up period was 5.0 }1.98 years. Friedman fs Two-Way ANOVA and Wilcoxon signed-rank tests were used to evaluate the treatment (T2-T1), follow-up (T3-T2) and overall (T3-T1) results. RESULTS: With the DPA-FM therapy, SNA and ANB angles increased (p 0.001); however, no significant differences were found in these parameters during T3-T2 period [p=0.655 (SNA), p=0.805 (ANB)]. Significant increases were found in N„¨FH-A distance during the treatment (p 0.01) and follow-up (p 0.05) periods. Molar relation showed significant increases with DPA-FM in both the treatment and overall period (p 0.001). Overjet increased significantly during the treatment (p 0.001), follow-up (p 0.05), and overall (p 0.001) periods. Significant protrusion of upper incisors (U1/NA) was observed during the treatment, follow-up, and overall periods (p 0.05). U6/PP and L6/MP angles did not change during the DPA-FM treatment; however, these parameters decreased significantly during the follow-up and overall periods (p 0.05). CONCLUSION: In the treatment of Class III malocclusion, the DPA-FM appliance was effective. The skeletal and dental sagittal changes achieved by orthopedic treatment were maintained in the long term.

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Angle Class III , follow , up studies , malocclusion , orthodontic appliances , orthodontics

Acta Odontologica Turcica

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