scholarly journals Nasal Changes after Surgical Correction of Skeletal Class III Malocclusion in Koreans

2008 ◽  
Vol 78 (3) ◽  
pp. 427-432 ◽  
Author(s):  
Chooryung Chung ◽  
Yebert Lee ◽  
Kwang-Ho Park ◽  
Sun-Hyung Park ◽  
Young-Chel Park ◽  
...  
Keyword(s):  
Surgical Correction ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Skeletal Class ◽  
Alar Base ◽  
Nasal Region ◽  
Nasal Tip Projection ◽  
Bimaxillary Surgery ◽  
Alar Cinch Suture ◽  
Nasal Changes

Abstract Objective: To quantify the changes in the nose after bimaxillary surgery to correct skeletal Class III malocclusion and to test the hypothesis that there is no change in the nasal width following bimaxillary surgical correction of skeletal Class III when a nasal cinch is properly used. Materials and Methods: Sixty-five adult Korean skeletal Class III patients who had received maxillary advancement/impaction and mandibular set-back surgery in conjunction with an alar base cinch suture were evaluated. The anthropometric variables of the nasal region were measured directly on the soft-tissue surface before and 6 months after surgery. Results: After surgery, the alar width and alar base width had increased significantly (P < .001), while the nasal tip projection decreased (P < .001). The nostril morphology also showed widening (P < .001). There was a trend for females with a narrow alar width presurgically to have a larger amount of nasal widening compared with those with a broader alar width (P < .05). Conclusion: There is a high probability of nasal and nostril widening after bimaxillary surgery for skeletal Class III malocclusion in Koreans despite the careful performance of alar cinch suture. Nevertheless, the authors believe that alar cinch suture was positive in limiting the nasal widening to the minimum and would consider routine application during bimaxillary surgery for skeletal Class III especially for female patients with a narrow nose who are susceptible to these changes.

scholarly journals Case Report: Orthosurgical Management of Skeletal Class III Malocclusion

2020 ◽  
Vol 54 (2) ◽  
pp. 150-156
Author(s):  
Sanjeev Verma
Keyword(s):  
Case Report ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Skeletal Class ◽  
Comprehensive Management ◽  
Mandibular Setback ◽  
Lower Jaw ◽  
History Of ◽  
Bimaxillary Surgery ◽  
Type 3

VG, 25-year-old male, presented with c/c of forwardly placed lower jaw and history of unsatisfactory previous orthodontic treatment. Extraorally, the patient had asymmetrical face and concave profile, competent lips, positive lip step, and chin deviated toward left side by 2 mm. Intraorally, the patient had Angle’s class III type 3 malocclusion with an overjet of (–1) mm, overbite of 0%, and cross-bite wrt 12, 21. The patient was skeletal class III due to macrognathic and prognathic mandible with hypodivergent growth pattern, and proclined upper and retroclined lower incisors. The patient was managed orthosurgically with bimaxillary surgery (maxillary advancement 3 mm + mandibular setback 7 mm) after presurgical decompensation. The case report discusses in detail the diagnosis and comprehensive management of the skeletal class III case.

scholarly journals Orthodontic and Orthognathic Surgical Correction of a Skeletal Class III Malocclusion

2010 ◽  
Vol 30 (2) ◽  
pp. 161-166
Author(s):  
Tetsutaro YAMAGUCHI ◽  
Yoko TOMOYASU ◽  
Tatsuo SHIROTA ◽  
Masashi HATORI ◽  
Satoru SHINTANI ◽  
...  
Keyword(s):  
Surgical Correction ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Skeletal Class

scholarly journals A Comparative Assessment of Orthodontic Treatment Outcomes of Mild Skeletal Class III Malocclusion Between Facemask and Facemask in Combination with a Miniscrew For Anchorage in Growing Patients: A Single-center, Prospective Randomized Controlled trial

2019 ◽  
Vol 90 (1) ◽  
pp. 3-12 ◽  
Author(s):  
Masahiro Seiryu ◽  
Hiroto Ida ◽  
Atsushi Mayama ◽  
Satoshi Sasaki ◽  
Shutaro Sasaki ◽  
...  
Keyword(s):  
Treatment Outcomes ◽  
Controlled Trial ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Skeletal Class ◽  
Randomized Controlled ◽  
Group 12 ◽  
Prospective Randomized Controlled Trial ◽  
Group A ◽  
Negative Side Effects

ABSTRACT Objectives To investigate the hypothesis that there is difference in the treatment outcomes of milder skeletal Class III malocclusion between facemask and facemask in combination with a miniscrew in growing patients. Materials and Methods Patients were randomly divided into two groups. In one group, the patients were treated with facemask therapy (FM group: 12 males, eight females, average age: 10 years, 5 months ± 1 year, 8 months). In the other group, patients were treated with facemask therapy along with a miniscrew (FM+MS group: 12 males, seven females, average age: 11 years, 1 month ± 1 year, 3 months). A lingual arch with hooks was fixed to the maxillary arch in both groups and a protractive force of 500 g was applied from the facemask to the hooks. The patients were instructed to use the facemask for 12 hours per day. In the FM+MS group, a miniscrew was inserted into the palate and fixed to the lingual arch. Results Mobility and loosening of the miniscrew were not observed during treatment. Lateral cephalometric analysis showed that SNA, SN-ANS, and ANB values were significantly increased in the FM+MS group compared with those for the FM group (SNA, 1.1° SN-ANS, 1.3° ANB, 0.8°). Increase in proclination of maxillary incisors was significantly greater in the FM group than in the FM+MS group (U1-SN, 5.0°). Conclusions During treatment of milder skeletal Class III malocclusion, facemask therapy along with a miniscrew exhibits fewer negative side effects and delivers orthopedic forces more efficiently to the maxillary complex than facemask therapy alone.

scholarly journals Skeletal Class III Malocclusion with Lateral Open Bite and Facial Asymmetry Treated with Asymmetric Lower Molar Extraction and Lingual Appliance: A Case Report

2021 ◽  
Vol 18 (10) ◽  
pp. 5381
Author(s):  
Vo Truong Nhu Ngoc ◽  
Nguyen Thi Thu Phuong ◽  
Nguyen Viet Anh
Keyword(s):  
Case Report ◽  
Open Bite ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Skeletal Class ◽  
Facial Esthetics ◽  
Lingual Appliance ◽  
Lower Incisors ◽  
Mandibular Incisors ◽  
Molar Extraction

A skeletal Class III malocclusion with open bite tendency is considered very difficult to treat orthodontically without surgery. This case report describes the lingual orthodontic treatment of an adult skeletal Class III patient with mandibular deviation to the left side, lateral open bite, unilateral posterior crossbite, zero overbite and negative overjet. The lower incisors were already retroclined to compensate with the skeletal discrepancy. The patient was treated by asymmetric molar extraction in the mandibular arch to retract the lower incisors and correct the dental midline, with the help of intermaxillary elastics. Lingual appliance was used with over-torqued lower anterior teeth’s brackets to control the torque of mandibular incisors. After a 30-month treatment, satisfactory smile and facial esthetics and good occlusion was achieved. A 12-month follow-up confirmed that the outcome was stable. Asymmetric molar extraction could be a viable option to retract mandibular incisors in Class III malocclusion with lower dental midline deviation.

scholarly journals Analysis of MYO1H Gene Polymorphism in Skeletal Class-III Malocclusion Due to Mandibular Prognathism

2021 ◽  
Author(s):  
Anjana Atteeri ◽  
Praveen Kumar Neela ◽  
Pavan Kumar Mamillapalli ◽  
Vasu M. Sesham ◽  
Sreekanth Keesara ◽  
...  
Keyword(s):  
Local Population ◽  
Research Work ◽  
Control Group ◽  
Study Group ◽  
Genome Wide Association Studies ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Mandibular Prognathism ◽  
Skeletal Class ◽  
Increased Risk

Abstract Background Mandibular prognathism (MP) is a craniofacial deformity resulting from the combined effects of environmental and genetic factors. Although various linkage and genome-wide association studies for mandibular prognathism have identified multiple strongly associated regions and genes, the causal genes and variants responsible for the deformity remained ambiguous. Aim This research work was aimed to study the association between polymorphism rs10850110 of the MYO1H gene and skeletal class-III malocclusion in our local population. Materials and Methods Thirty patients with skeletal class III due to mandibular prognathism in the study group and 30 patients with skeletal class I in the control group were selected for this study. These patients were from both sexes and above age 10 years. Based on the cephalometric values, patients were categorized into study and control groups. SNB (angle between sella, nasion and point B at nasion) greater than 82 degrees with an ANB (angle between point A, nasion and point B at nasion) of less than 0 degrees in the study group and ANB (angle between point A, nasion and point B at nasion) of 2 to 4 degrees in the control group were categorized. The polymorphism (rs10850110) of the MYO1H gene was genotyped using polymerase chain reaction and restriction fragment length polymorphism. Associations were tested with SNP exact test using SNPstats software. Results The single-nucleotide polymorphism rs10850110 showed a statistically significant association with mandibular prognathism. The G allele of marker rs10850110 (5′ of myosin1H - MYO1H) was overrepresented when compared with the “A” allele in mandibular prognathism cases (p < 0.0001), and this was very significant. Conclusion These results suggest that the rs10850110 polymorphism of the MYO1H gene is associated with an increased risk for mandibular prognathism.

Sign in / Sign up

Export Citation Format

Share Document