scholarly journals Mesiodistal angulation of the lateral teeth to the functional occlusal plane in normal occlusions

2016 ◽  
Vol 6 ◽  
pp. 302-305
Author(s):  
Hiroshi Ueda ◽  
Morio Masunaga ◽  
Kayo Horie ◽  
Cynthia Concepcion Medina ◽  
Kazuo Tanne
Keyword(s):  
Young Adult ◽  
Orthodontic Treatment ◽  
Adult Patients ◽  
Class I ◽  
Occlusal Plane ◽  
Reference Plane ◽  
Length Discrepancy ◽  
Normal Occlusion ◽  
Mandibular Teeth ◽  
Plaster Models

Introduction Crowding is a malocclusion with irregularly positioned teeth caused by arch length discrepancy (ALD). Its incidence is high compared with the various malocclusions. In a previous study the crowns of the maxillary lateral teeth had erupted mesially in relation to the functional occlusal plane (FOP) in patients with Angle Class I malocclusion and highly erupted canines, which had been uprighted by non-extraction orthodontic treatment, yet these results were based on only two cases evaluated by using plaster models. Therefore, the aim of this study was to assess the mesiodistal angulations of both maxillary and mandibular teeth relative to the FOP in normal occlusion by means of cephalograms and identifying the teeth axial factors contributing to the normal dentitions with the least ALD. Materials and Methods Thirty Japanese young adult patients (6 males, 24 females) with normal occlusion were selected to participate in this study; cephalograms were procured from each and the FOP was used as a reference plane for measuring the changes in the axial angulation along with other indicators of vertical growth. Results Progressive mesial tipping of the maxillary lateral teeth was observed. First premolars tended to express this more than the second premolars but the tipping values were roughly 90º relative to the FOP on the first molars. Conclusion The maxillary lateral teeth are more mesially angulated compared to the mandibular ones relative to the FOP. Furthermore, progressive mesial tipping of the maxillary lateral teeth was detected, of which axial angulations were significantly correlated to each other, in spite the mandibular premolars and molars being angulated in a similar fashion.

scholarly journals Maxillomandibular Plane Angle Bisector (MM) Adjunctive to Occlusal Plane to evaluate Anteroposterior Measurement of Dental Base

2012 ◽  
Vol 13 (4) ◽  
pp. 539-544
Author(s):  
Chanamallappa R Ganiger ◽  
KU Cariappa ◽  
AR Yusuf Ahammed
Keyword(s):  
Clinical Significance ◽  
Orthodontic Treatment ◽  
Clinical Usefulness ◽  
Occlusal Plane ◽  
Reference Plane ◽  
Plane Angle ◽  
B Values ◽  
Angle Bisector ◽  
Lateral Cephalograms ◽  
Relationship Of

ABSTRACT Aim This study was undertaken to analyze the clinical usefulness of the maxillomandibular bisector, its reproducibility, its validity and its relationship to the functional occlusal plane, the bisecting occlusal plane and the nature of its cant. Materials and methods Thirty pretreatment lateral cephalograms, each of adolescents (above 18 years of age) and children (10- 12 years), seeking orthodontic treatment were randomly selected and the Wits technique of anteroposterior measurement was used to compare A-B values measured to the new plane with those measured to the functional occlusal plane (FOP) and to the traditional or bisecting occlusal plane (BOP). Results Present study showed that MM bisector plane is more reproducible and valid reference plane, than the FOP and BOP. Conclusion A new plane, geometrically derived from the dental base planes, has been tested as an occlusal plane substitute for the measurement of anteroposterior jaw relationships. It lies close to but at an angle and inferior to the traditional occlusal planes and is highly reproducible at all times. Clinical significance Maxillomandibular planes angle bisector may be a useful adjunct for the cephalometric assessment of sagittal relationship of the patient. How to cite this article Ganiger CR, Nayak USK, Cariappa KU, Ahammed ARY. Maxillomandibular Plane Angle Bisector (MM) Adjunctive to Occlusal Plane to evaluate Anteroposterior Measurement of Dental Base. J Contemp Dent Pract 2012; 13(4):539-544.

scholarly journals The Impact of Orthodontic Treatment on Pre-Existing Gingival Recessions: A Retrospective Study

2021 ◽  
Vol 11 (19) ◽  
pp. 9036
Author(s):  
Guostė Antanavičienė ◽  
Eglė Zasčiurinskienė ◽  
Dalia Smailienė ◽  
Nomeda Basevičienė
Keyword(s):  
Retrospective Study ◽  
Orthodontic Treatment ◽  
Negative Impact ◽  
Open Bite ◽  
Class Iii ◽  
Before And After ◽  
Pre Treatment ◽  
Mandibular Teeth ◽  
The Impact ◽  
Plaster Models

(1) Background: This retrospective study aimed to examine the change of gingival recessions (GR) before and after orthodontic treatment (OT). (2) Methods: Patients who had at least one GR on the vestibular surface of maxillary/mandibular teeth mesial to first molars were included. GR was measured on good quality plaster models before and after OT. (3) Results: Significant improvement of mean GR at patient level was found between T0 and T1 (0.45 mm, 95% CI: 0.28, 0.62) (p < 0.001). In 51.4% of patients GRs became better, in 37.8% GRs did not change. and in 10.8% GRs became worse. At tooth level the mean GR improvement was 0.54 mm (CI: 0.42, 0.65; median 0.55 mm Q1; Q3: 0.12, 0.96) (p < 0.001). GR improved in 67 teeth (58.7%), did not change in 41 (36.0%), and worsened in 6 (5.3%). Full healing was observed in 15 teeth. A reduced GR improvement was found in cases with pre-treatment open bite (OR 3.89; CI: 1.35, 11.16; p = 0.008) and dental Class III patients (OR 2.6; CI: 1.11, 6.0; p = 0.026). (4) Conclusion: There was an improvement of GR after OT in more than half of the patients. Class III malocclusion and reduced pre-treatment overbite had a negative impact on GR improvement.

scholarly journals Normal torque of the buccal surface of mandibular teeth and its relationship with bracket positioning: a study in normal occlusion

2006 ◽  
Vol 17 (2) ◽  
pp. 155-160 ◽  
Author(s):  
Marcelo Antonio Mestriner ◽  
Carla Enoki ◽  
José Nelson Mucha
Keyword(s):  
Orthodontic Treatment ◽  
Small Difference ◽  
Orthodontic Appliances ◽  
Vertical Shift ◽  
Mandibular Tooth ◽  
Normal Occlusion ◽  
History Of ◽  
Mandibular Teeth ◽  
Bracket Positioning ◽  
Mandibular Incisors

This study evaluated the degree of buccolingual inclination of mandibular tooth crowns relative to torque. For such purpose, mandibular and maxillary stone casts from 31 Caucasian Brazilian adults with normal occlusion, pleasant facial aspect and no history of previous orthodontic treatment were examined. A custom device was developed for measuring the degree of inclination (torque) of bracket slots of orthodontic appliances relative to the occlusion plane, at three bonding height: standard (center of clinical crown), occlusal (0.5 mm occlusally from standard) and cervical (0.5 mm cervically from standard). Except for the mandibular incisors, which presented a small difference in torque from one another (lingual root torque for central incisors and buccal root torque for lateral incisors), the remaining average values are close to those found in the literature. Due to the convexity of the buccal surface, the 1-mm vertical shift of the brackets from occlusal to cervical affected the values corresponding to the normal torque, in approximately 2 degrees in central and lateral incisors, 3 degrees in canines and 8 degrees in premolars and molars.

scholarly journals Orthodontic Treatment of a Mandibular Incisor Extraction Case with Invisalign

2014 ◽  
Vol 2014 ◽  
pp. 1-4 ◽  
Author(s):  
Khalid H. Zawawi
Keyword(s):  
Treatment Option ◽  
Orthodontic Treatment ◽  
Adult Patients ◽  
Class I ◽  
Effective Treatment Option ◽  
Mandibular Incisor ◽  
Anterior Crowding ◽  
Number Of Patients ◽  
Orthodontic Patients ◽  
Fixed Appliances

Mandibular incisor extraction for orthodontic treatment is considered an unusual treatment option because of the limited number of patients that meet the criteria for such treatment. Accurate diagnosis and treatment planning is essential to achieve the desired results. Adult orthodontic patients are increasingly motivated by esthetic considerations and reject the idea of conventional fixed appliances. In recent years, Invisalign appliances have gained tremendous attention for orthodontic treatment of adult patients to meet their esthetic demands. In this case report, a case of Class I malocclusion was treated with mandibular incisor extraction using the Invisalign appliance system. Successful tooth alignment of both arches was achieved. The use of Invisalign appliance is an effective treatment option in adult patients with Class I malocclusion that requires incisor extraction due to moderate to severe mandibular anterior crowding.

scholarly journals The prevalence of orthodontic treatment need and malocclusion problems in 8–9-year-old schoolchildren: A study in the south of Thailand

2019 ◽  
Vol 9 ◽  
pp. 99-104 ◽  
Author(s):  
Sirate Rapeepattana ◽  
Angkana Thearmontree ◽  
Supanee Suntornlohanakul
Keyword(s):  
Orthodontic Treatment ◽  
Class Ii ◽  
Mixed Dentition ◽  
Class I ◽  
Class Iii ◽  
The South ◽  
Cross Sectional Survey ◽  
Cross Sectional ◽  
Treatment Need ◽  
Normal Occlusion

Aims This study aims to find the prevalence of orthodontic treatment need and malocclusion problems in 8–9-year-old schoolchildren in the south of Thailand. Materials and Methods A number of 202 children (100 boys and 102 girls) samples were randomly selected from all schools in Hat Yai District, Songkhla Province, Thailand. A cross-sectional survey of dental health component (DHC) of the Index of Orthodontic Treatment Need (IOTN) and malocclusion problems was investigated by clinical examination and dental model. Results Levels 4 and 5 of orthodontic treatment need according to DHC of IOTN of the sample were presented in 18.8% and 1.49%, respectively. Children who need orthodontic treatment (Grade 2–4) showed more than one highest DHC problem that indicated the level of treatment need (39.68%). Normal occlusion was found at 6.43%. Malocclusions such as Class I, Class II division 1, Class II division 2, and Class III malocclusion were observed in 78.71%, 7.92%, 3.47%, and 3.47%, respectively. Reversed overjet and overjet >9 mm were detected in 5.64% and 1.58%, respectively. Approximately half of the children (46.67%) had overbite >3.5 mm. Conclusions High percentage of children in mixed dentition period who need orthodontic treatment was found in this study. Some children who presented with the orthodontic treatment need Grade 2–4 had more than one DHC problem which identified the grade of treatment need. Class I malocclusion was most frequently found in this group of children.

scholarly journals Total maxillary arch distalization by using headgear in an adult patient:

2020 ◽  
Author(s):  
Chenshuang Li ◽  
Luca Sfogliano ◽  
Wenlu Jiang ◽  
Haofu Lee ◽  
Zhong Zheng ◽  
...  
Keyword(s):  
Combined Treatment ◽  
Facial Asymmetry ◽  
Class Ii ◽  
Adult Patients ◽  
Class I ◽  
Current Case ◽  
Skeletal Class ◽  
Normal Occlusion ◽  
Temporary Skeletal Anchorage ◽  
Maxillary Arch

ABSTRACT Although headgear is rarely used in adult patients, its use in adults is mainly for anchorage control. In the current case report, a 24-year-old patient had a skeletal Class I relationship with a Class II tendency, brachyfacial pattern, significant facial asymmetry, and dental 3/4 cusp Class II molar and canine relationships on both sides. The patient declined surgery, and facial asymmetry was not his concern. The final treatment goal was to achieve a stable Class I dental relationship and normal occlusion without significantly compromising the patient's profile. The patient was compliant with the use of cervical-pull headgear after he refused the options of orthodontic-orthognathic combined treatment, maxillary premolar extraction, or temporary skeletal anchorage mini-implants. A 5-mm maxillary arch distal movement was accomplished without significant distal tipping of the molar crowns. The active treatment duration was 31 months. Proper overbite and overjet, balanced occlusion, and an acceptable facial profile were achieved. The treatment results inspire reconsideration of the possibility of using headgear in dental Class II correction in adult patients.

scholarly journals The difference between Begg and Straightwire appliances on molar position, occlusal plane angle, and anterior and posterior facial height changes

2020 ◽  
Vol 53 (4) ◽  
pp. 223
Author(s):  
Dewi Sartika Santoso ◽  
C. Christnawati ◽  
Cendrawasih Andusyana Farmasyanti
Keyword(s):  
Orthodontic Treatment ◽  
Good Condition ◽  
Class I ◽  
Permanent Teeth ◽  
Occlusal Plane ◽  
Plane Angle ◽  
Anterior Teeth ◽  
Facial Height ◽  
Lateral Cephalograms ◽  
The Difference

Background: Bimaxillary and bidental protrusion Class I Angle malocclusions have a characteristic convex facial profile and protrusion lips due to the labial inclination of the anterior teeth. Extraction of the first four premolars is the most common choice for orthodontic treatment of these cases when all the permanent teeth are complete and in good condition. Orthodontic treatment can be performed using the Begg or Straightwire techniques. Purpose: This study aims to investigate the difference in the effect of orthodontic treatment with Begg and Straightwire appliances on molar position, occlusal plane, and anterior and posterior facial height. Methods: Sixty pairs of lateral cephalograms before and after the treatment of patients with bimaxillary and bidental protrusive Angle malocclusion Class I, aged 18–35 years old, who underwent orthodontic treatment using the Begg and Straightwire techniques with the extraction of all first premolars that met the inclusion criteria. Data analysis was performed using two-way repeated analysis of variance (p<0.05) and Pearson correlation (p<0.05). Results: Molar position, occlusal plane angle, and anterior and posterior facial heights increased significantly after the Begg technique treatment and decreased significantly after the Straightwire technique treatment (p<0.05), but there were no significant differences between the four variables in the two techniques (p>0.05). Medium correlation was found between variables in both the Begg and Straightwire techniques. Conclusion: Molars were extruded and mesialized and the occlusal plane angle and height of the anterior and posterior faces increased after the Begg appliances treatment. The molars moved mesially and occlusally and there was a decrease in the occlusal plane angle, as well as the height of the anterior and posterior faces, after treatment with the Straightwire appliances. However, there was no difference between the two techniques.

scholarly journals Cephalometric Norms of Erbil Kurdish Adults

2020 ◽  
Vol 10 (1) ◽  
pp. 130-134
Author(s):  
Botan A. Mustafa Chalabee ◽  
Bayan A. Hassan
Keyword(s):  
Ethnic Groups ◽  
Orthodontic Treatment ◽  
Cross Sectional Study ◽  
Occlusal Plane ◽  
Cephalometric Analysis ◽  
Sectional Study ◽  
Linear Measurements ◽  
Cross Sectional ◽  
Normal Occlusion ◽  
Lateral Cephalograms

Ethical group might have differential skeletal forms, thus cephalometric analysis and orthodontic material have been developed for specific ethnic groups which might be different for Kurdish Ethics.Objectives: This study is to determine the cephalometric norms of an Erbil Kurdish population according to Steiner analysis, who attend to Tishk Hospital/Diagnosis Department Materials and Methods: In this cross-sectional study, 48 lateral cephalograms of adult orthodontic subjects between 20 and 29 years with normal occlusion, and with no previous orthodontic treatment were evaluated. Lateral cephalograms were traced and analyzed based on Steiner’s cephalometric parameters. Data were analyzed using SPSS. Differences between Erbil Kurdish and Steiner’s norms were analyzed using one-sample t-test (P < 0.05). Results: The SNA, ML-NSL (Mandibular Line to NS line), U1-NA (both angular and linear measurements), interincisal angle, L1-NB (angular only), Pog-NB, L1-Pog//NB, Ls-SL, and Li-SL values were significantly different between the Erbil Kurdish population and Steiner’s norms (P < 0.05). No significant differences existed in Occl-SN (occlusal plane to SN) and L1-Nb (linear only), SNB, and ANB between the Erbil Kurdish population and the Steiner’s norms (P > 0.05). Conclusions: Cephalometric norms for Erbil Kurdish adults are different from those of Steiner’s norms. The norms obtained in our study can be used for orthodontic treatments and orthognathic surgeries in Erbil Kurdish population.

scholarly journals RELATIONSHIP BETWEEN OCCLUSAL PLANE ORIENTATION AND SAGITTAL MALOCCLUSIONS: STUDY OF AN ORTHODONTIC POPULATION

2021 ◽  
pp. 1-6
Author(s):  
INES DALLEL ◽  
SANA KANOUN ◽  
MARIEM NAHDI ◽  
MONCEF OMMEZINE ◽  
SAMIR TOBJI ◽  
...  
Keyword(s):  
Orthodontic Treatment ◽  
Class Ii ◽  
Significant Rise ◽  
Class I ◽  
Occlusal Plane ◽  
Class Iii ◽  
Angle Class ◽  
Mandibular Plane ◽  
Significant Difference ◽  
Skeletal Pattern

Objective: The aim of this study was to evaluate the association of the skeletal pattern and angle class with the occlusal plane (OP). This study also examined the effect of orthodontic treatment on this plane. Methods: Lateral cephalometric radiographs of a sample of 135 patients were collected. The angles between the Frankfort horizontal, palatal plane (PP), mandibular plane (MP), and the OP were analyzed and compared between several groups and subsequently before and after treatment. Results: The statistical comparison between 3 skeletal frame groups demonstrates that the cant of the OP showed a major difference. This difference was greater in class III subjects. Examination revealed that the OP was not meaningfully affected within the Angle classification. Statistically, a significant correlation was found between OP steepness and the vertical skeletal pattern. A significant rise of OP/sella-nasion (SN) for class I (p=0.019) and II (p=0.015) after orthodontic treatment. In addition, patients treated with elastics showed a significant decrease of OP/MP (mandibular plane) in Angle class III and considerable increase of OP/SN and OP/PP in Angle class II. Observations of the group treated with bimaxillary extractions showed that OP/SN (sella nasion line) and OP/PP differ in a meaningful way. Conclusion: This study confirms the association between the skeletal pattern and the OP inclination in adults. Concerning the Angle classification, there was no significant difference between the groups. Orthodontic therapy had an influence on the inclination of this plane for the different malocclusions. Premolars extraction in class I cases significantly modified the OP. For class II and III malocclusions, the OP inclination was mainly altered by the use of intermaxillary traction elastics.

scholarly journals Bolton ratio in subjects with normal occlusion and class-I malocclusion

2016 ◽  
pp. 24-28
Author(s):  
Hasnat Jahan ◽  
Md Zakir Hossain
Keyword(s):  
Gender Differences ◽  
Orthodontic Treatment ◽  
Permanent Dentition ◽  
Class I ◽  
Angle Class ◽  
Normal Occlusion ◽  
Pre Treatment ◽  
Anterior Ratio ◽  
Overall Ratio

Aim: To verify the presence of Bolton ratios [Overall ratio & Anterior ratio] in Bangladeshi individuals with normal occlusion and class-I malocclusion. Methods:The materials comprised 120 pre-treatment study cast [60 male & 60 female aged 13-17 years] ,divided into two groups,first group were selected from the models of 60 students who had normal occlusion without crowding [equal male & female] and second group were selected from 60 patients who had Angle class-I crowding[equal male &famale], applied for orthodontic treatment based on the following criteria –permanent dentition from the 1st right molar to the 1st left molar and no interproximal caries or restorations.Bolton anterior & overallratios were performed for the study casts of the subjects using slide caliper. Results: The results showed that  there was no significants differences between two groups .Also no significant gender differences were found in Bolton anterior& overall ratios. Ban J Orthod & Dentofac Orthop, April 2016; Vol-6 (1-2), P.24-28

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