Treatment effect of combined maxillary protraction and chincap appliance in severe skeletal Class III cases

Ishii, Hisayoshi; Morita, Shuichi; Takeuchi, Yutaka; Nakamura, Shinji

doi:10.1016/0889-5406(87)90331-3

Cited by 169 publications

(110 citation statements)

References 11 publications

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“…Chinese and Malaysian groups showed a much higher mean prevalence rate than other racial groups: 15.69% and 16.59%, respectively [4][5][6][7][8]. This is consistent with previous reports of higher rates of Angle class III malocclusion among Asian populations [26,27].…”

Section: Discussionsupporting

confidence: 82%

Prevalence of angle class III malocclusion: A systematic review and meta-analysis

Hardy¹,

Cubas²,

Orellana³

2012

OJEpi

111

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Objective: This study seeks to review current and relevant literature on global Angle class III malocclusion prevalence. Materials and Methods: The electronic databases PubMed, ISI Web of Knowledge, and the Cochrane Database of Systematic Review were searched using specific inclusion criteria to obtain applicable articles. All pertinent references were also examined for acceptability. Results: A total of 20 articles were identified using the inclusion criteria. The prevalence of Angle class III malocclusion ranged from 0% to 26.7% in different populations reported in the literature examined. Meta-regression analysis showed no statistically significant association between prevalence rates and the method of assessment, age group and year of the study. However, much of the study-to-study variation (approximately 40%) could be explained by population. Conclusion: These results suggest that the prevalence of Angle class III malocclusion varies greatly within different races and geographic regions. Chinese and Malaysian populations have a higher prevalence of Angle class III malocclusion compared to other racial groups, while Indian populations have a lower prevalence than all other racial groups examined.

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Section: Discussionsupporting

confidence: 82%

Prevalence of angle class III malocclusion: A systematic review and meta-analysis

Hardy¹,

Cubas²,

Orellana³

2012

OJEpi

111

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“…[14][15][16][17][18][19] The results of a meta-analysis by Jä ger et al 13 and Kim et al 3 revealed that SNMeGo angles became enlarged by 0.9Њ and 1.8Њ during treatment with face masks. Jä ger et al 13 believed that the main reason for the documented reductions of SNB values by 0.9Њ was posterior rotation of the mandible.…”

Section: Discussionmentioning

confidence: 99%

“…1,[12][13][14][15][16] The patient sample analyzed in the present study revealed only a small degree of maxillary rotation. Possible reasons may be found in the specific configuration we used, including a ventrocaudally oriented force vector, palatally mounted hooks to hang in the rubber elastics, and intermittent treatment with FOA appliances.…”

Section: Discussionmentioning

confidence: 99%

Early Treatment to Correct Class III Relations with or without Face Masks

Godt

Zeyher

Schatz-Maier

et al. 2008

The Angle Orthodontist

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Objective:To determine what therapeutic effects can be expected in the case of early treatment of Class III relations with removable appliances with or without face masks. Materials and Methods: Records available at the university clinic of Tü bingen for 41 patients who had undergone early treatment because of prognathic abnormalities were retrospectively evaluated. Lateral cephalograms taken and casts obtained at baseline and at the end of early treatment were included in the analysis. Two treatment strategies were compared. The first group included removable functional orthopedic appliances only (FOA group), while the second group was treated with removable appliances and with face masks mounted on a cemented maxillary expansion appliance (face mask group). Results: Positive changes were achieved in both groups for overjet (FOA group: ϩ1.3 mm; face mask group: ϩ2.2 mm) and Wits values (FOA group: ϩ0.4 mm; face mask group: 1.7 mm). Moreover, a change in mean ANB values was achieved in the face mask group (ϩ0.9Њ). The FOA group exhibited a reduction in mandibular angles. Changes in maxillary inclination with reduced inclination angles led to increases in overjet and overbite. The face mask group showed dorsal rotation of the mandible with reduced SNB values (Ϫ0.8Њ). Conclusion: Early treatment of prognathism is a meaningful option, as demonstrated by the dentoskeletal (and hence functional) improvements observed in the present study.

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“…In clinical studies with FM therapy, forward movement of the maxilla and clockwise rotation of the mandible were reported as typical skeletal effects of the appliance. [9][10][11] The main purpose of the DPA is to counteract the possible tendency toward posterior rotation of the mandible, 5,6 which has been shown to be an unfavorable skeletal change in subjects with Class III malocclusion treated with FM and in untreated subjects with Class III malocclusion. 12,13 In this study we aimed to evaluate the treatment effects of the combination of these two appliances (DPA-FM) and compare them with FM therapy alone.…”

Section: Discussionmentioning

confidence: 99%

Comparison of double-plate appliance/facemask combination and facemask therapy in treating Class III malocclusions

Gencer¹,

Kaygisiz

Yüksel

et al. 2015

The Angle Orthodontist

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Objective: To compare the treatment effects of double-plate appliance/facemask (DPA-FM) combined therapy and facemask (FM) therapy in treating Class III malocclusions. Materials and Methods: The material consisted of lateral cephalometric radiographs of 45 children with skeletal and dental Class III malocclusion. The first treatment group comprised 15 patients (mean age 5 11 years) treated with FM. The second treatment group comprised 15 patients (mean age 510 years 9 months) treated with DPA-FM. The third group comprised 15 patients (mean age 5 10 years 5 months) used as controls. The paired t-test was used to evaluate the treatment effects and changes during the treatment and observation period in each group. Differences between the groups were determined by variance analysis and the Duncan test. Results: With the DPA-FM and FM appliances, the SNA and ANB angles increased significantly. These changes were statistically different compared with the control group. Lower facial height showed a greater increase in both treatment groups than in the control group. Molar relation showed a greater increase in the DPA-FM group than in the FM group. The increase in U6/ANS-PNS angle in the FM group was significantly different from the DPA-FM and control groups. The L1/NB angle and Pg-T increased significantly only in the FM group, but no significant difference was found between the treatment groups. Conclusions: In the treatment of Class III malocclusion, both appliances were effective. The significant sagittal changes in the lower incisors and pogonion in the FM group compared with the nonsignificant changes in the DPA-FM group might be due to the restriction effect of acrylic blocks in the DPA-FM group. (Angle Orthod. 2015;85:278-283.)

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Treatment effect of combined maxillary protraction and chincap appliance in severe skeletal Class III cases

Cited by 169 publications

References 11 publications

Prevalence of angle class III malocclusion: A systematic review and meta-analysis

Prevalence of angle class III malocclusion: A systematic review and meta-analysis

Early Treatment to Correct Class III Relations with or without Face Masks

Comparison of double-plate appliance/facemask combination and facemask therapy in treating Class III malocclusions

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