Ortho-surgical Management of  Severe Skeletal Class II Div 2 Malocclusion in Adult

Daokar, Suchita; Agrawal, Gauri; Chaudhari, Charushila Vinay; Yamyar, Sheetal

doi:10.3126/ojn.v7i1.18902

Cited by 3 publications

(3 citation statements)

References 1 publication

(1 reference statement)

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“…4 Treatment modality for skeletal class II discrepancies involve growth modification, camofluage or combined Orthodontic orthognathic surgical treatment. 5 Current standards used for decision making in orthognathic surgical treatment planning are largely based on hard tissue parameters such as angle ANB > 9°, Pogonion-Zero meridian line >18mm and Gonion-Pogonion <70mm. 6,7 Orthodontic paradigm shift to the soft tissue, psychosocial impact of aesthetics and its role as successful treatment outcome requires significant consideration of profile.…”

Section: Introductionmentioning

confidence: 99%

Facial Profile Convexity in Skeletal Class II Malocclusion: How Soft Tissue Angle of Facial Convexity (SA-FC) Correlate with Angle ANB in Skeletal Class II Subjects

Imtiaz¹,

Qamar²

2022

J Pak Dent Assoc

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OBJECTIVE: The research was conducted to determine the correlation between Soft tissue angle of facial convexity (SA-FC) and angle ANB in skeletal class II malocclusion. The outcome of the study will help in determining if the routine consideration of ANB angle while the lack of defined thresholds for convexity of soft tissue profile justified for choosing the treatment modality. METHODOLOGY: Lateral cephalograms of 141 skeletal class II subjects (ANB>4°) were obtained. Angular parameters including soft tissue angle of facial convexity (SA-FC) and angle ANB were determined. Gender dimorphism of the variables was assessed by Mann Whitney U test. Correlation between SA-FC and angle ANB were determined utilizing Spearman's correlation coefficient. RESULTS: The angle SA-FC and ANB depicted moderately positive correlation (r = 0.662, p<0.001). Gender dimorphism exists with increased mean value of ANB (7.88±1.90) and SA-FC (23.22±7.61) in females. CONCLUSIONS: Angle SA-FC depicts moderately positive correlation with angle ANB among skeletal class II subjects, hence suggesting the need of soft tissue guidelines along-with hard tissue parameters for selection of treatment modality. KEYWORDS: Cephalometry, Malocclusion, Diagnosis, soft tissue, correlation.

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Section: Introductionmentioning

confidence: 99%

Facial Profile Convexity in Skeletal Class II Malocclusion: How Soft Tissue Angle of Facial Convexity (SA-FC) Correlate with Angle ANB in Skeletal Class II Subjects

Imtiaz¹,

Qamar²

2022

J Pak Dent Assoc

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“…In oral surgery clinics, malocclusion and associated facial bone deformities are common and primarily affect the appearance and occlusion of patients. According to previous studies, mandibular deficiency is a common phenomenon, particularly in developing adolescents, with a worldwide prevalence of 1.1-21.5% [1]. To correct mandibular deficiency, mandibular advancement is often performed via intraoral vertical ramus osteotomy (IVRO) and bilateral sagittal split osteotomy (BSSO) [2].…”

Section: Introductionmentioning

confidence: 99%

Biomechanical Analysis of the Forces Exerted during Different Occlusion Conditions following Bilateral Sagittal Split Osteotomy Treatment for Mandibular Deficiency

Chang

Chan

Hsu

et al. 2019

Applied Bionics and Biomechanics

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The bilateral sagittal split osteotomy (BSSO) technique is commonly used to correct mandibular deficiency. If the patient is exposed to excessive external forces after the procedure, occlusal changes or nonunion may occur. However, previous studies only focused on single external forces on the mandible and did not conduct relevant research on the forces exerted by different occlusion conditions. The main purpose of this study was to use finite element analysis methods to determine the biomechanics of four common occlusion conditions after BSSO surgical treatment. This study constructed a finite element analysis computer model of a miniplate implanted in the lower jaw. The structure of the model consisted of the mandible, miniplate, and screws. In addition, external forces were applied to the superficial masseter, deep masseter, medial pterygoid, anterior temporalis, middle temporalis, and posterior temporalis muscles to simulate the incisal clench, intercuspal position (ICP), right unilateral molar clench (RMOL), and right group function occlusion conditions. Subsequently, this study observed the effects of these conditions on the miniplate, screws, and mandible, including the von Mises stress values. The results showed that all of the different occlusion conditions that this study evaluated placed high stress on the miniplate. In the ICP and RMOL occlusion conditions, the overall mandibular structure experienced very high stress. The screw on the proximal segment near the bone gap experienced high stress, as did the screw on the buccal side. According to the present analysis, although the data were not directly obtained from clinical practice, the finite element analysis could evaluate the trend of results under different external forces. The result of this study recommended that patients without intermaxillary fixation avoid the ICP and RMOL occlusion conditions. It can be used as a pilot study in the future for providing clinicians more information on the biomechanics of implantation.

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“…The treatment of severe dentofacial deformities in adult patients is challenging and arduous task for both orthodontist and oral surgeon. Treatment is difficult because of the skeletal and facial disharmony, absence of jaw growth and propensity to relapse, [2,3] Bilateral Sagittal Split Osteotomy is very popular and versatile procedure performed intraorally on mandibular body and ramus. Osteotomy is an indispensable surgical procedure for the correction of lower jaw deformities.…”

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confidence: 99%

Interdisciplinary Orthodontics- A Combined Ortho-surgical Approach for Treating Skeletal Class II Malocclusion

Sharma¹,

Patel²,

Gupta³

et al. 2021

Univ J Dent Sciences

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This case reports shows the successful treatment of Skeletal class II malocclusion with an end-on molar relation on both right and left side with overjet of 8mm and overbite of 6mm in a 19 year old female patient through Bilateral Sagittal Split Osteotomy (BSSO) Advancement, performed by oral and maxillofacial surgeon. With the combined orthodontic and orthognathic surgical approach; the correction of skeletal and dental imbalance, functional occlusion, dental and skeletal Class I relationship was achieved with minimal appointment.

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Ortho-surgical Management of Severe Skeletal Class II Div 2 Malocclusion in Adult

Cited by 3 publications

References 1 publication

Facial Profile Convexity in Skeletal Class II Malocclusion: How Soft Tissue Angle of Facial Convexity (SA-FC) Correlate with Angle ANB in Skeletal Class II Subjects

Facial Profile Convexity in Skeletal Class II Malocclusion: How Soft Tissue Angle of Facial Convexity (SA-FC) Correlate with Angle ANB in Skeletal Class II Subjects

Biomechanical Analysis of the Forces Exerted during Different Occlusion Conditions following Bilateral Sagittal Split Osteotomy Treatment for Mandibular Deficiency

Interdisciplinary Orthodontics- A Combined Ortho-surgical Approach for Treating Skeletal Class II Malocclusion

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