scholarly journals Treatment outcomes of the various force applications in growing patients with skeletal Class III malocclusion:

2021 ◽  
Author(s):  
Li-In Lim ◽  
Jin-Young Choi ◽  
Hyo-Won Ahn ◽  
Seong-Hun Kim ◽  
Kyu-Rhim Chung ◽  
...  
Keyword(s):  
Total Force ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Linear Measurements ◽  
Mandibular Incisor ◽  
Lower Incisor ◽  
Skeletal Class ◽  
Force Application ◽  
Anterior Teeth ◽  
Significant Difference

ABSTRACT Objectives To evaluate skeletal, dentoalveolar, and soft tissue changes between intraoral light force application and extraoral heavy force application in growing patients with skeletal Class III malocclusion. Materials and Methods: A retrospective study was conducted with pretreatment and posttreatment lateral cephalometric data from 50 subjects with skeletal Class III malocclusion. In the first group (15 boys, 10 girls; 8.67 ± 2.13 years old), each subject wore a biocreative horseshoe appliance (CHS) with two Class III elastics that exerted a force of 200 g. In the second group (13 boys, 12 girls; 8.96 ± 1.82 years old), each subject wore a Petit-type facemask and a lingual arch with hooks fixed to the maxillary arch with a total force of 700 g. Both groups of patients were instructed to wear the appliance approximately 14 hours a day, and 22 linear measurements and 8 angular measurements were evaluated. Changes of measurements from each group were compared by paired t-tests, considering a 5% significance level. Results Forward growth of the maxilla, improvement of the maxilla–mandible relationship, and upper incisor flaring were achieved in both groups without any statistically significant difference between them. Lateral cephalometric analysis also showed that U1 exposure, IMPA (Angle between mandibular plane and mandibular incisor axis), FMIA (Angle between FH plan and mandibular incisor axis), and L1-APog (Angle formed by the intersection of tooth axis of lower incisor and A-Pog line, Distance from lower incisor edge to A-Pog line) showed statistically significant differences. Lower incisors were inclined lingually in the CHS group. Conclusions During treatment of skeletal Class III malocclusion, the CHS with light Class III intermaxillary elastics therapy exhibits similar orthopedic changes to the maxillary complex and more dental changes to the lower anterior teeth compared with facemask therapy.

scholarly journals Changes in smile morphometric indices following maxillary advancement and mandibular setback surgery in skeletal Class III patients

2019 ◽  
Vol 18 (2) ◽  
pp. 216-221
Author(s):  
Fahimeh Farzanegan ◽  
Farzin Hearvi ◽  
Mandana Karrari ◽  
Hooman Shafaee ◽  
Touraj Vaezi ◽  
...  
Keyword(s):  
Medical Science ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Lower Incisor ◽  
Skeletal Class ◽  
Mandibular Setback ◽  
Post Surgery ◽  
Maxillary Advancement ◽  
Significant Difference ◽  
Mandibular Setback Surgery

Objectives: The aim of this study was to evaluate the changes in smile morphometric indices following maxillary advancement and mandibular setback surgery in patients with skeletal class III malocclusion. Materials and Methods: Smile morphometric indices were measured on frontal rest and smile photographs of 15 female patients with skeletal Class III malocclusions before and three months after maxillary advancement and mandibular setback surgery. Pre- and post-surgery measurements were compared. Results: The amount of left and right commissural height, philtrum height, and maximum upper incisor show at rest did not change significantly three months after surgery (p>0.05). The amount of maximum upper and lower incisor show, interlabial gap, smile width and index, buccal corridor ratio, gingival display, and smile arc on the frontal smile photographs didn’t showstatistically significant difference before and after surgery (P>0.05). Conclusion: Orthognathic surgery in patients with skeletal Class III malocclusion had no significant effect on rest and smile parameters from the frontal view. Bangladesh Journal of Medical Science Vol.18(2) 2019 p.216-221

scholarly journals Management Of Mandibular Lateral Incisor Agenesis With Skeletal Class III Malocclusion by Space Closing Technique

2018 ◽  
Vol 1 (2) ◽  
pp. 93
Author(s):  
Fidiyah Inayati ◽  
I Gusti Aju Wahju Ardani
Keyword(s):  
Lateral Incisor ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Anterior Crowding ◽  
Skeletal Class ◽  
Dental Esthetics ◽  
Skeletal Malocclusion ◽  
Anterior Teeth ◽  
Space Closure ◽  
Closure Method

Background: Patients with congenital absence of a mandibular lateral incisor are often found having difficulty in achieving adequate functional occlusion. It may affect esthetics, mastication, speech, and occlusal balance. Purpose: This paper reported an agenesis treatment of one mandibular lateral incisor case using a space closure method. Case: A twenty-three years old female patient with agenesis of tooth 42, mandibular anterior crowding, multiple diastema on mandibular anterior teeth, and skeletal class III malocclusion. Case Management: Space closure method was chosen to correct the agenesis by considering the class III skeletal malocclusion and multiple diastema condition. Conclusion: Space closure method treatment improved the patient’s facial and dental esthetics, and it provided a good functional occlusion, despite the absence of a mandibular lateral incisor, which generally impairs the adequate incisal guidance.

scholarly journals Management of an Adult with Spaced Dentition, Class III Malocclusion and Open-bite Tendency

2011 ◽  
Vol 05 (01) ◽  
pp. 121-129 ◽  
Author(s):  
Demet Kaya ◽  
Tulin Ugur Taner
Keyword(s):  
Treatment Plan ◽  
Open Bite ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Skeletal Class ◽  
Anterior Teeth ◽  
Old Adult ◽  
Facial Pattern ◽  
Set Up ◽  
Tongue Thrust

ABSTRACTThe aim of this case report was to present the orthodontic treatment of an adult with spaced dentition, Class III malocclusion, and open-bite tendency. A 28.4-year-old adult woman was concerned about the unesthetic appearance of her spaced dentition localized at both upper and lower arches while smiling. She had a mild tongue thrust, hypertropic upper frenum, and mild speech difficulty while pronouncing “s”. Her profile was straight with prominent lips. Molar relationship was Class III on both sides. Anterior teeth were in an end-to-end relationship. Lower dental midline was deviated to the left side. Cephalometric analysis revealed a skeletal Class III relationship with hyperdivergent facial pattern. The treatment plan included myotherapeutic exercises for the tongue thrust habit and a diagnostic set-up for closure of diastemas. A strict retention protocol was followed combined with gingivoplasty, fiberotomy, and frenectomy procedures. All spaces were closed successfully, adequate overbite and overjet relationships were obtained, and tongue thrust habit and speech difficulty while pronouncing “s” were eliminated. Clinical and cephalometric results indicated the maintenance of the treatment outcome at 6-months post-retention period. (Eur J Dent 2011;5:121-129)

scholarly journals Palatal bone thickness at the implantation area of maxillary skeletal expander in adult patients with skeletal Class III malocclusion: a cone-beam computed tomography study

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Weiting Chen ◽  
Kaili Zhang ◽  
Dongxu Liu
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Adult Patients ◽  
Cone Beam ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Bone Thickness ◽  
Skeletal Class ◽  
Significant Difference ◽  
Palatal Bone

Abstract Background Maxillary skeletal expanders (MSE) is effective for the treatment of maxillary transverse deformity. The purpose of the study was to analyse the palatal bone thickness in the of MSE implantation in patients with skeletal class III malocclusion. Methods A total of 80 adult patients (40 males, 40 females) with an average angle before treatment were divided into two groups, the skeletal class III malocclusion group and the skeletal I malocclusion group, based on sagittal facial type. Each group consisted of 40 patients, with a male to female ratio of 1:1. A cone-beam computed tomography scanner was employed to obtain DICOM data for all patients. The palatal bone thickness was measured at 45 sites with MIMICS 21.0 software, and SPSS 22.0 software was employed for statistical analysis. The bone thickness at different regions of the palate in the same group was analysed with one-way repeated measures ANOVA. Fisher’s least significant difference-t method was used for the comparison of pairs, and independent sample t test was employed to determine the significance of differences in the bone thickness at the same sites between the two groups. Results Palatal bone thickness was greater in the middle region of the midline area (P < 0.01), while the thickness in the middle and lateral areas in both groups was generally lower (P < 0.001). The bone in the anterior, middle, and posterior regions of the two groups became increasingly thin from the middle area toward the parapalatine region. The palatal bone was significantly thinner in the area 9.0 mm before the transverse palatine suture in the midline area, 9.0 mm before and after the transverse palatine suture in the middle area, and 9.0 mm after the transverse palatine suture in the lateral area. Conclusion The palatal bone was thinner in patients with class III malocclusion than in patients with class I malocclusion, with significant differences in some areas. The differences in bone thickness should be considered when MSE miniscrews are implanted. The anterior and middle palatal areas are safer for the implantation of miniscrews, while the thinness of the posterior palatal bone increases the risk of the miniscrews falling off and perforating.

scholarly journals Orthodontic retreatment using anchorage with miniplate to camouflage a Class III skeletal pattern

2016 ◽  
Vol 21 (3) ◽  
pp. 104-115 ◽  
Author(s):  
Marcel Marchiori Farret
Keyword(s):  
Class Iii ◽  
Mandibular Incisor ◽  
Skeletal Class ◽  
Anterior Teeth ◽  
End Of Treatment ◽  
Skeletal Pattern ◽  
Incisor Retraction ◽  
Previously Treated ◽  
The Right ◽  
Dentofacial Orthopedics

ABSTRACT This manuscript describes the treatment of a 27-year-old patient who was previously treated with two maxillary first premolar extractions. The patient had skeletal Class III malocclusion, Class III canine relationship, anterior crossbite, and a concave profile. As the patient refused orthognathic surgery, a miniplate was used on the right side of the lower arch as an anchorage unit after the extraction of mandibular first premolars, aiding the retraction of anterior teeth. At the end of treatment, anterior crossbite was corrected, in which first molars and canines were in a Class I relationship, and an excellent intercuspation was reached. Furthermore, patient's profile remarkably improved as a result of mandibular incisor retraction. A 30-month follow-up showed good stability of the results obtained. This case was presented to the Brazilian Board of Orthodontics and Dentofacial Orthopedics (BBO) as one of the requirements to become diplomate by the BBO.

scholarly journals Effects of Presurgical Mandibular Incisor Decompensation on Long-Term Outcomes of Class III Surgical Orthodontic Treatment

2021 ◽  
Vol 10 (13) ◽  
pp. 2870
Author(s):  
Jung-Sub An ◽  
Wonchae Jeong ◽  
Liselotte Sonnesen ◽  
Seung-Hak Baek ◽  
Sug-Joon Ahn
Keyword(s):  
Orthodontic Treatment ◽  
Group Differences ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Long Term Outcomes ◽  
Mandibular Incisor ◽  
Skeletal Class ◽  
Lateral Cephalograms ◽  
Mandibular Incisors

This research aimed to evaluate the effects of presurgical mandibular incisor decompensation on long-term outcomes of Class III surgical orthodontic treatment. Thirty-five patients with skeletal Class III malocclusion who received conventional surgical orthodontic treatment were included. Mandibular incisor brackets with −6° of inclination were placed normally in 18 patients (NB group) and inversely in 17 patients (RB group). Between-group differences and relationships between incisal and skeletal variables were analyzed based on lateral cephalograms at pretreatment, presurgery, postsurgery, posttreatment, and retention. Mandibular incisors were more labially inclined in the RB group than in the NB group from presurgery to retention. No significant between-group differences were observed in presurgical and postsurgical skeletal relationships. The NB group exhibited a larger overjet with deficient interincisal contact at postsurgery than the RB group. Skeletal Class III relationship was also more severe in the NB group at retention. More lingually inclined mandibular incisors at presurgery and larger overjet at postsurgery were correlated with a more severe skeletal Class III relationship at retention. Thus, establishing appropriate postsurgical overjet by sufficient presurgical mandibular incisor decompensation may play a significant role in postsurgical stability of Class III surgical orthodontic treatment.

scholarly journals Correlation between periodontal soft tissue and hard tissue surrounding incisors in skeletal Class III patients

2017 ◽  
Vol 88 (1) ◽  
pp. 91-99 ◽  
Author(s):  
Jeong-Ho Park ◽  
Ji-Yeon Hong ◽  
Hyo-Won Ahn ◽  
Su-Jung Kim
Keyword(s):  
Soft Tissue ◽  
Plate Thickness ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Hard Tissue ◽  
Skeletal Class ◽  
Anterior Teeth ◽  
Tissue Factors ◽  
Gingival Biotype ◽  
Mandibular Incisors

ABSTRACT Objectives: To investigate the association between the periodontal soft tissue, alveolar bone and dental parameters surrounding the incisors at baseline in patients with skeletal Class III malocclusion. Materials and Methods: The study sample comprised 154 teeth from 28 patients with skeletal Class III malocclusion (19 men and 9 women, 21.15 ± 4.02 years). Periodontal soft tissue examination and hard tissue measurements with cone-beam computed tomography (CBCT) were performed. Factor analysis was used to reduce the CBCT variables, and correlation analysis between the hard tissue factors and soft tissue parameters was performed. Differences in hard tissue parameters between thick and thin gingival types were evaluated. Results: CBCT measurements were reduced to three hard tissue factors: lingual plate, coronal-buccal plate, and apical-buccal plate. Keratinized gingiva width and thickness were positively correlated with the coronal-buccal plate factor and negatively correlated with the apical-buccal plate factor. In the thin gingival biotype, mandibular incisors were more proclined, and the apical part of the buccal alveolar plate and the coronal part of lingual alveolar plate were thicker than in the thick gingival biotype. Conclusions: In the anterior teeth in cases of skeletal Class III malocclusion, hard tissue structures on the buccal side can be grouped based on coronal and apical factors that are significantly correlated with keratinized gingival width and thickness. Thick and thin gingival biotypes exhibited differences in tooth inclination and alveolar plate thickness with regard to the mandibular incisors.

scholarly journals Nonsurgical Correction of Skeletal Class III Malocclusion by Multibends Edgewise Archwire Technique in an Adult

2015 ◽  
Vol 4 (2) ◽  
pp. 137-142
Author(s):  
Jian-hong YU ◽  
Chien-Chih YU ◽  
Chang Yuan-Chieh ◽  
Tsai Ya-Yu ◽  
Pan Po-Wei
Keyword(s):  
Orthognathic Surgery ◽  
Orthodontic Treatment ◽  
Niti Alloy ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Posterior Teeth ◽  
Skeletal Class ◽  
Anterior Teeth ◽  
Nonsurgical Correction ◽  
Lower Arch

ABSTRACT Skeletal class III malocclusion treated with orthognathic surgery usually can achieve a better facial profile and stable occlusion outcome. We describe a 37-year-old patient who sought orthodontic treatment for skeletal class III, but refused recommendations for orthognathic surgery because of personal considerations. After careful analysis of the X-ray images and study models, this patient was subjected to active orthodontic treatment to correct malocclusion using upper and lower arch with improved superelastic NiTi alloy wire (ISW) for efficient leveling of the teeth. In the lower arch, the multibends edgewise archwire (MEAW) technique was used to tip back and intrude the canine and posterior teeth. After the completion of treatment, anterior teeth crossbite was successfully corrected and proper occlusal relationships were reestablished. How to cite this article Chang YC, Jian-Hong YU, Tsai YY, Chien-Chih Y, Pan PW. Nonsurgical Correction of Skeletal Class III Malocclusion by Multibends Edgewise Archwire Technique in an Adult. Int J Experiment Dent Sci 2015;4(2): 137-142.

scholarly journals Perawatan Kamuflase Maloklusi Klas III Dentoskeletal menggunakan Teknik Begg pada Pasien Dewasa

2015 ◽  
Vol 1 (2) ◽  
pp. 116
Author(s):  
Dwi Agustina ◽  
Soekarsono Hardjono ◽  
Sri Suparwitri
Keyword(s):  
Treatment Options ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Fixed Appliance ◽  
Skeletal Class ◽  
Anterior Teeth ◽  
Mandibular Position ◽  
Orthognatic Surgery ◽  
Growth Modification ◽  
Angle Class Iii

Maloklusi kelas III dapat didefinisikan sebagai kelainan wajah skeletal dengan karakteristik posisi mandibula lebih maju terhadap dasar cranium dan atau terhadap maksila. Ada tiga pilihan perawatan untuk maloklusi kelas III dentoskeletal yaitu; modifikasi pertumbuhan, kamuflase dan bedah orthognatik. Artikel ini mempresentasikan kasus seorang pasien dewasa dengan maloklusi kelas III dentoskeletal yang dirawat dengan ortodontik kamuflase menggunakan teknik Begg. Seorang pasien laki-laki, berusia 16 tahun, didiagnosa maloklusi kelas III Angle dengan hubungan skeletal kelas III dan gigi depan maksila dan mandibula berjejal. Perawatan menggunakan alat cekat teknik Begg dengan pencabutan premolar kedua maksila dan premolar pertama mandibula serta elastis intermaxillar kelas III. Kesimpulan hasil perawatan selama 10 bulan menunjukkan bahwa kamuflase ortodontik dapat dianggap sebagai terapi yang efektif untuk koreksi maloklusi kelas III dentoskeletal.   ABSTRACT: A Camouflage Treatment Of Dentoskeletal Class III Malocclusion In Adult Using Begg Technique B. Class III malocclusion can be defined as a skeletal facial deformity characterized by a forward mandibular position with respect  to the cranial base and or the maxilla. There are three main treatment options for dentoskeletal class III malocclusion: growth modification, orthodontic camouflage and orthognatic surgery. The article presented a case of an adult patient with dentoskeletal class III malocclusion treated with orthodontic camouflage treatment with Begg technique. A male patient, 16 years old, diagnosis malocclusion Angle class III, skeletal class III with crowding anterior teeth maxilla and mandibular. Using the fixed appliance, Begg technique, with the extraction of second premolars maxilla and first premolars mandibular. The appliance is completed with intermaxillary class III elastics. The results for 10 months of this treatment indicated that orthodontic camouflage can be considered an effective therapy for corection of dentoskeletal class III malocclusion.

scholarly journals Association between Crowding and the Effective Maxillary and Mandibular Length among Orthodontic Patients of Kathmandu, Nepal.

2021 ◽  
Vol 3 (2) ◽  
pp. 76-80
Author(s):  
Sanjay Prasad Gupta ◽  
Samarika Dahal ◽  
Shristi Rauniyar
Keyword(s):  
Class Ii ◽  
Dental Arch ◽  
Class Ii Malocclusion ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Lateral Cephalogram ◽  
Skeletal Class ◽  
Skeletal Class Ii ◽  
Significant Difference ◽  
Dental Crowding

Background: During orthodontic consultation, the most frequent major complaint of the patients is dental crowding, which is caused by a disparity between the arch length and tooth size. Objective: The purpose of this study was to evaluate the association between crowding and the effective maxillary and mandibular length in Nepalese orthodontic patients.Methods: The orthodontic records of 390 people (from January 2018 to December 2020) were randomly selected and classified into three skeletal malocclusions based on the ANB angle (Angle formed by point A and point B at the nasion). Subjects with skeletal malocclusions were subdivided into two groups depending on the degree of crowding in the mandibular arch: Group 1 had crowding of < 3mm, and Group 2 had crowding of >3mm. On pretreatment casts, digital vernier calipers (Digimatic, Precise, India) were used to assess dental arch crowding, whereas, on a pretreatment lateral cephalogram, digital cephalometric analysis (Vistadent OC 1.1, USA) was done to quantify effective maxillary and mandibular length. Inter-group comparisons were assessed using a one-way analysis of variance. The correlation was assessed by Pearson’s correlation coefficient (p≤0.05).Results: There was a statistically significant difference in effective maxillary and mandibular length among skeletal malocclusions (p<0.05). Skeletal Class II malocclusion had the greatest mandibular crowding, while skeletal Class III malocclusion had the least. The effective maxillary and mandibular lengths and dental crowding had a significant but weak inverse correlation, whereas a strong but moderate positive correlation existed between the maxillary and mandibular effective lengths (r=0.674) and also between maxillary and mandibular crowding (r=0.631).Conclusion: Effective maxillary length was highest in skeletal class II malocclusion whereas effective mandibular length was highest in skeletal class III malocclusion. The shorter effective maxillary and mandibular lengths showed a weak association with dental crowding.

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