Comparison of skeletal anchorage and tooth-borne maxillary protraction followed by fixed appliance in Class III malocclusion

Summary Objectives The purpose of this study was to compare the results of skeletal anchorage (SAMP) and tooth- borne (TBMP) maxillary protraction followed by fixed appliance in growing skeletal Class III patients. Materials and methods Patients treated with maxillary protraction were selected and classified into two groups (SAMP: n = 19, mean age = 11.19 years; TBMP: n = 27, mean age = 11.21 years). Lateral cephalograms taken before treatment (T0), after the maxillary protraction (T1), and after the fixed appliance treatment (T2) were analysed and all variables were statistically tested to find difference between the two groups. Results Compared to the TBMP, the SAMP showed significant forward growth of maxilla (Co-A point and SN-Orbitale) and improvement in intermaxillary relationship (ANB, AB to mandible plane, and APDI) after the overall treatment (T0–T2), with no significant sagittal changes in maxilla or mandible throughout the fixed appliance treatment (T1–T2). Limitations In maxillary protraction, effects of skeletal anchorage were retrospectively compared with those of dental anchorage, not with Class I or III control. Conclusions and implications After maxillary protraction, skeletal and tooth-borne anchorage did not cause significant differences in the residual growth of maxilla throughout the phase II treatment. Orthopaedic effects with skeletal anchorage showed appropriate stability in maxilla and intermaxillary relationship even after fixed appliance treatment.

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Postpubertal Effects of the Rapid Maxillary Expansion and Facial Mask versus the Removable Mandibular Retractor for the Early Treatment of Class III Malocclusion: A Study on Lateral Cephalograms

Applied Sciences ◽

10.3390/app11188393 ◽

2021 ◽

Vol 11 (18) ◽

pp. 8393

Author(s):

Veronica Giuntini ◽

Matteo Camporesi ◽

Valeria Barone ◽

Matilde Marino Merlo ◽

Cosimo Nardi ◽

...

Keyword(s):

Early Treatment ◽

Rapid Maxillary Expansion ◽

Class Iii ◽

Class Iii Malocclusion ◽

Maxillary Expansion ◽

Facial Mask ◽

Skeletal Class ◽

Maxillary Protraction ◽

Time Points ◽

Lateral Cephalograms

The aim of this study was to compare the efficacy of early treatment of Class III malocclusions with rapid maxillary expansion (RME) and facial mask (FM) versus the removable mandibular retractor (RMR) re-evaluated at a postpubertal observation on lateral cephalograms. All prepubertal patients with Class III malocclusion treated consecutively from 1986 to 2013 by means of RME/FM or RMR were analyzed. Twenty-nine patients treated with RME/FM therapy and 23 patients treated with RMR were selected. Lateral cephalograms were available at 3 time points, before treatment (T1), at the end of active treatment (T2), and at a postpubertal observation (T3). Statistical comparisons were performed with independent sample t tests or Mann–Whitney tests. During the T1–T3 interval, a significantly greater maxillary protraction (SNA +1.5 mm, p = 0.031) and significantly greater improvements in ANB and Wits appraisal (+1.9 degrees, p = 0.002, and +2.2 mm, p = 0.012, respectively) were recorded in the RME/FM group. No statistically significant changes could be found in vertical skeletal measurements. In the dentoalveolar region, the RME/FM group showed a significantly greater correction of the molar relationship (−1.5 mm, p = 0.021). Early treatment of Class III malocclusion with RME/FM protocol in comparison with RMR protocol showed a greater maxillary advancement and greater improvements in sagittal skeletal Class III relationships.

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Perawatan Maloklusi Pseudo Kelas III dengan Alat Ortodontik Cekat Teknik Begg

Majalah Kedokteran Gigi Indonesia ◽

10.22146/majkedgiind.15414 ◽

2016 ◽

Vol 19 (1) ◽

pp. 163

Author(s):

Robertus Meidiyanto ◽

Wayan Ardhana

Keyword(s):

Class I ◽

Intermediate Form ◽

Class Iii ◽

Class Iii Malocclusion ◽

Fixed Appliance ◽

Skeletal Class ◽

Gonial Angle ◽

Skeletal Changes ◽

Sample Measurement ◽

Relationship Of

Latar Belakang: Maloklusi Pseudo kelas III ditandai dengan hubungan yang tidak harmonis antara relasi anteroposterior rahang dan posisi mandibula terhadap maksila. Ketidakharmonisan tersebut dapat disebabkan karena mandibula yang normal dengan maksila retrusif. Maloklusi pseudo kelas III mempunyai perhitungan yang menunjukkan bentuk antara klas I dan skeletal klas III. Perbedaanya hanya pada sudut gonial dimana pada skeletal klas III sudutnya lebih tumpul, sedangkan pada sampel pseudo klas III, sudut gonial lebih mirip dengan klas I. Perawatan ortodontik dengan alat cekat teknik Begg dapat juga untuk merawat maloklusi Angle kelas III, termasuk maloklusi skeletal yang menyertainya. Tujuan: memaparkan perubahan dental dan skeletal setelah perawatan dengan alat cekat teknik Begg. Kasus: perempuan 20 tahun mengeluhkan gigi-gigi rahang atas ada yang tumbuh di belakang dan rahang bawah nyakil sehingga menganggu penampilan dan mengurangi rasa percaya diri. Diagnosis: Maloklusi Angle Klas III subdivisi serta hubungan skeletal klas III dengan maksila retrusif dan mandibula protusif disertai Crossbite: 12, 11, 21, 22 terhadap 34, 32,31, 41, 42, 43. Perawatan: menggunakan alat cekat teknik Begg tanpa pencabutan. Kesimpulan: Hasil menunjukkan crowded terkoreksi, overjet dan overbite terkoreksi, relasi molar menjadi klas I. Background: Pseudo class III malocclusion characterized by disharmony between anteroposterior relationship of jaw and mandibulae position toward maxilla. This disharmony cause by normally shaped mandibles and underveloped maxillae. Pseudo clas III malocclusion is an intermediate form between class I and skeletal clas III malocclusion. The only exception was the gonial angle, which was generally more obtuse in the skeletal class III sample. Measurement of gonial angle in the pseudo class III sample was found to be rather similar to class I sample. Fixed Begg orthodontic appliance can be used to treat Angle’s class III malocclusion accompany with skeletal problem. Purpose: to describe dental and skeletal changes after begg fixed orthodontic. Case: 20 year old woman complained of crowded maxilla front teeth and mandible protrusion. Diagnosis: malocclusion Angle class III subdivision, skeletal class III with maxilla retruded and mandibular pronation along with anterior crossbite: 12, 11, 21, 22, to 34, 32, 31, 41, 42, 43. Treatment: using the Begg fixed appliance techniques without extraction. Conclusion: The result showed that crowded, overjet and overbite corrected, and molar relation become class I.

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Skeletal Class III malocclusion treatment using mandibular and maxillary skeletal anchorage and intermaxillary elastics: a case report

Dental Press Journal of Orthodontics ◽

10.1590/2177-6709.24.5.052-059.oar ◽

2019 ◽

Vol 24 (5) ◽

pp. 52-59

Author(s):

Mehrnaz Fakharian ◽

Erfan Bardideh ◽

Mostafa Abtahi

Keyword(s):

Case Report ◽

Treatment Method ◽

Skeletal Anchorage ◽

Class Iii ◽

Class Iii Malocclusion ◽

Skeletal Class ◽

Maxillary Protraction ◽

Skeletal Malocclusion ◽

Mandibular Plane ◽

Surgical Treatments

ABSTRACT Introduction: Skeletal Class III malocclusion is one of the most challenging malocclusions to treat. In around 40% of Class III patients, maxillary retrognathia is the main cause of the problem and in most patients, orthopedic/surgical treatments includes some type of maxillary protraction. Objective: The aim of this case report was to describe a treatment method for a patient with maxillary retrognathia and Class III skeletal discrepancy using mandibular and maxillary skeletal anchorage with intermaxillary elastics. Case report: A 13-year-old boy with maxillary retrognathia and mandibular prognathism was treated using bilateral miniplates. Two miniplates were inserted in the mandibular canine area and two other miniplates were placed in the infrazygomatic crests of the maxilla. Class III intermaxillary elastics were used between the miniplates. Results: After eight months of orthopedic therapy, ANB angle increased by 4.1 degrees and ideal overjet and overbite were achieved. Mandibular plane angle was increased by 2.1 degrees and the palatal plane was rotated counterclockwise by 4.8 degrees. Conclusion: This case showed that the skeletal anchorage treatment method may be a viable option for treating patients with Class III skeletal malocclusion.

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Quantitative Analysis of Body Posture and Its Correlation With Cervical Posture in Various Malocclusions

10.21203/rs.3.rs-149271/v1 ◽

2021 ◽

Author(s):

Shruthi Pradeep ◽

Priyanka Venkatasubramanian ◽

Ratna Parameswaran ◽

Devaki Vijayalakshmi

Keyword(s):

Class Ii ◽

Body Posture ◽

Force Platform ◽

Class I ◽

Class Iii ◽

Class Iii Malocclusion ◽

Skeletal Class ◽

Skeletal Malocclusion ◽

Lateral Cephalograms ◽

Cervical Posture

Abstract BACKGROUND: Considering that malocclusions can cause cervico-mandibular and cervico-cranial disorders, the aim of this study is to investigate whether there are significant differences in posture in subjects with skeletal class I, class II and skeletal class III malocclusion METHODS: A clinical study conducted on 90 subjects with Angle`s class I, II, III skeletal malocclusion. Standardized Casts of the subjects were used to analyze the tooth characteristics. Lateral cephalograms were used to assess cervical posture through cervical skull Rocabado analysis. A customized force platform with pressure sensors were used for posture analysis. RESULTS: There is a difference in body posture in subjects with skeletal class I, class II and class III malocclusion and a positive correlation between body posture and cervical posture is found in subjects with these classes of skeletal malocclusion. Subjects with class I malocclusion were found to have a normal cervical and body posture. Strain values from the force platform showed equal distribution of strain on both the feet. Subjects with class II malocclusion were found to have a forward cervical posture with the forward lean of body posture. Subjects with class III skeletal malocclusion were found to have a backward cervical posture with the posterior lean of body posture. CONCLUSION: The results suggest that different classes of malocclusion present with an alteration in cervical and body posture. Correction of the malocclusion or an intervention plan for the prevailing malocclusion should be done as early as possible which can be used to correct the posture thereby restoring the equilibrium of the body.

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Clinical Curative Effect of a Fixed Appliance with Maxillary Protraction in the Treatment of Skeletal Class III Malocclusion

Journal of Hard Tissue Biology ◽

10.2485/jhtb.22.363 ◽

2013 ◽

Vol 22 (3) ◽

pp. 363-368

Author(s):

Yi Liu ◽

Ying Zheng ◽

Fan Liu ◽

Yong-juan Guo ◽

Na An

Keyword(s):

Class Iii ◽

Class Iii Malocclusion ◽

Curative Effect ◽

Fixed Appliance ◽

Skeletal Class ◽

Maxillary Protraction

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Björk-Jarabak cephalometric analysis on CBCT synthesized cephalograms with different dentofacial sagittal skeletal patterns

Dental Press Journal of Orthodontics ◽

10.1590/2176-9451.19.6.046-053.oar ◽

2014 ◽

Vol 19 (6) ◽

pp. 46-53 ◽

Cited By ~ 5

Author(s):

Yalil Augusto Rodriguez-Cardenas ◽

Luis Ernesto Arriola-Guillen ◽

Carlos Flores-Mir

Keyword(s):

Class I ◽

Cone Beam ◽

Cephalometric Analysis ◽

Class Iii ◽

Class Iii Malocclusion ◽

Skeletal Class ◽

Gonial Angle ◽

Lateral Cephalograms ◽

Standard Values ◽

Range Test

OBJECTIVE: The objective of this study was to evaluate the Björk and Jabarak cephalometric analysis generated from cone-beam computed tomography (CBCT) synthesized lateral cephalograms in adults with different sagittal skeletal patterns.METHODS: The sample consisted of 46 CBCT synthesized cephalograms obtained from patients between 16 and 40 years old. A Björk and Jarabak cephalometric analysis among different sagittal skeletal classes was performed. Analysis of variance (ANOVA), multiple range test of Tukey, Kruskal-Wallis test, and independent t-test were used as appropriate.RESULTS: In comparison to the standard values: Skeletal Class III had increased gonial and superior gonial angles (P < 0.001). This trend was also evident when sex was considered. For Class I males, the sella angle was decreased (P = 0.041), articular angle increased (P = 0.027) and gonial angle decreased (P = 0.002); whereas for Class III males, the gonial angle was increased (P = 0.012). For Class I females, the articular angle was increased (P = 0.029) and the gonial angle decreased (P = 0.004). Björk's sum and Björk and Jabarak polygon sum showed no significant differences. The facial biotype presented in the three sagittal classes was mainly hypodivergent and neutral.CONCLUSIONS: In this sample, skeletal Class III malocclusion was strongly differentiated from the other sagittal classes, specifically in the mandible, as calculated through Björk and Jarabak analysis.

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