scholarly journals Evaluation and Comparison of Skeletal and Dental Components of Deep Overbite Malocclusion with Normal Occlusion

2021 ◽  
Vol 10 (20) ◽  
pp. 1519-1524
Author(s):  
Harshil Naresh Joshi
Keyword(s):  
Treatment Plan ◽  
Test Results ◽  
Contributing Factors ◽  
Deep Bite ◽  
Curve Of Spee ◽  
Mandibular Plane ◽  
Normal Occlusion ◽  
Lateral Cephalograms ◽  
Significant Difference ◽  
Mandibular First Molar

BACKGROUND A deep overbite may be due to an underlying skeletal or dentoalveolar component that may influence the treatment plan. The purpose of this study was to evaluate and compare the different components of deep bite malocclusion and normal occlusion. METHODS This was a case control study. Lateral cephalograms and study casts of normal (N = 50) and deep overbite (N = 50) subjects were used to evaluate skeletal and dentoalveolar components. Data was analysed statistically by independent t - test. RESULTS The significant skeletal contributing factors were gonial angles, mandibular plane, maxillary plane angle & ramus / Frankfort horizontal. An increased curve of Spee and decreased mandibular first molar height were predominant dental variables in the deep overbite group. The inclination of the upper incisors & lower incisors height did not show a statistically significant difference between the two groups. CONCLUSIONS The counterclockwise rotation of the mandible and the increased curve of Spee were the dominant features of deep bite malocclusion. This analysis of deep overbite components could help clinicians design individualised mechanotherapy based on the underlying cause rather than being prejudiced toward conventional mechanics when correcting with a deep overbite malocclusion. KEY WORDS Skeletal and Dental Components, Deep Overbite, Ramus / Frankfort Horizontal

scholarly journals Lower Incisor Positions in Different Malocclusions and Facial Pattern

2021 ◽  
pp. 298-304
Author(s):  
Abdul Jabbar ◽  
. Saba ◽  
Ramesh Lal ◽  
Amber Farooq ◽  
Uzma Bashir ◽  
...  
Keyword(s):  
Treatment Plan ◽  
Interobserver Reliability ◽  
Intraclass Correlation ◽  
P Value ◽  
Test Results ◽  
Lower Incisor ◽  
Normal Occlusion ◽  
Significant Difference ◽  
Facial Pattern ◽  
The Mean

Aims: The position of lower incisor has been of significant concern when seeking orthodontic treatment plan, it has been recognized as one of diagnostic key and play an important in the development of normal occlusion and facial pattern. This study was aimed at the determination of lower incisor position and its possible association with different sagittal malocclusions and facial patterns. Study Design: Descriptive Cross-sectional Study Place and Duration of Study:  Department of Orthodontics Institute of Dentistry Liaquat University Medical and Health Sciences (LUMHS) Jamshoro between June 2019 to July 2020. Methodology: Ninety-seven pre-treatment lateral cephalometric radiographies were taken, and they were classified sagittally into skeletal class I, II and III, and vertically into normodivergent, hyperdivergent and hypodivergent facial pattern using ANB and SNMP, respectively. Lower     incisor position was assessed by means of FMIA and IMPA. One way analysis of variance (ANOVA) was applied to check any association between lower incisor position and sagittal malocclusion and facial pattern.  P value of 0.05 was considered statistically significant. Results: The study sample consisted of 97 patients. The mean age of the patients was 25.55 SD ±3.93. The mean SNMP value was 28.84 SD ±7.354 and mean ANB value 4.809 SD ±3.85. Mean Incisor position based on IMPA was 98.598 SD ± 9.413 and FMIA 54 SD ±9.995.  Intra and interobserver reliability was assessed with intraclass correlation coefficient values ranging between 0.825 and 0.990 respectively. The ANOVA test results showed significant relationship between the sagittal malocclusion and incisor position with P value .036. The Bonferroni analysis indicated that statistically significant association existed in term of lower incisor position between Class II and Class III malocclusion with P value .047. Test results further indicated that there is no significant difference in the position of lower incisor in relation to facial pattern with P value .355. Conclusions: Statistically significant association was found between lower incisor position with respect to the sagittal malocclusion. However, no significant association was found between facial pattern and lower incisor position.

Comparison of Maxillary Central Inclination, Crown Angulation and Tooth Size Variation in Aesthetic and Non-aesthetic Smiles, A Cross Sectional Study

2021 ◽  
Vol 15 (1) ◽  
Author(s):  
Tarulatha Revanappa Shyagali ◽  
Rachita Singh ◽  
Anil Tiwari ◽  
Abhishek Gupta
Keyword(s):  
Size Variation ◽  
Cross Sectional Study ◽  
Tooth Size ◽  
Central Incisor ◽  
Cross Sectional ◽  
Maxillary Central Incisor ◽  
Normal Occlusion ◽  
Lateral Cephalograms ◽  
Significant Difference ◽  
The Aesthetic

Background: An attractive smile is often attributed to incisor alignment and proclined or retroclined incisors could contribute to a less aesthetic smile. Objectives: This study was aimed to evaluate the maxillary central incisor crown inclination, crown angulation and tooth size variation in aesthetic and unattractive smiles. Methods: This study was conducted among 100 females (equally divided into aesthetic and unaesthetic smile groups), aged between15 - 25 years, with Angle’s Class I normal occlusion and balanced profiles. Variations in maxillary central incisor crown inclination and angulation were measured on lateral cephalograms, photographs and the study models of the subjects. Variations in tooth morphology were also evaluated by measuring crown height and width in both groups. Mann-Whitney U test was performed to evaluate the difference between the aesthetic and unaesthetic smiles. P < 0.05 was considered as significant. Results: This study showed that incisor angulation was significantly higher in the unaesthetic group compared to the aesthetic group (P < 0.001). However, there was no statistically significant difference for the incisor inclination relative to the Palatal Plane between the aesthetic and unaesthetic smile groups (P = 0.086). In addition, there were significant differences between the aesthetic and the non-aesthetic groups regarding the central incisor height (P < 0.05). Conclusions: The findings of this study indicate that the possible variations in aesthetics are related to the ethnic elements that are associated with differences in crown angulations, as well as tooth size.

scholarly journals A comparison of treatment results of adult deep-bite cases treated with lingual and labial fixed appliances

2021 ◽  
Author(s):  
Hande Pamukçu ◽  
Ömür Polat Özsoy
Keyword(s):  
Orthodontic Treatment ◽  
Inclusion Criteria ◽  
Treatment Results ◽  
Lower Incisor ◽  
Deep Bite ◽  
Mandibular Plane ◽  
Number Of Patients ◽  
Significant Difference ◽  
Fixed Appliances ◽  
Lower Incisors

ABSTRACT Objectives To compare the cephalometric treatment results of adult deep-bite cases after labial and lingual fixed orthodontic treatment. Materials and Methods A total of 102 patients underwent lingual orthodontic treatment and complete records were evaluated. The following inclusion criteria were used: patients who had Angle Class I or mild Class II malocclusion; comprehensive orthodontic treatment that did not include intrusion mechanics or any extractions; patients with an initial overbite of more than 3.7 mm. Thirteen patients met the inclusion criteria. These cases were matched with the same number of patients according to age with a labial orthodontic treatment group. Pre- and post-treatment cephalometric radiographs were evaluated. Independent t test or Fisher exact tests were performed to assess the differences between the groups. Results Proclination of the upper incisors was higher in the labial group. Incisor mandibular plane angle (IMPA) showed an increase of 1.2° in the lingual group and 9.7° in the labial group. Lower incisor edge was approximately in a stable sagittal position in the lingual group but significant lower incisor proclination was seen in the labial group. The lower incisors were intruded (-1 mm) in the lingual group but lower incisors were minimally extruded (0.3 mm) in the labial group. No significant difference was found in the movements of upper and lower molars for both groups. Conclusions The nature of lower incisor movement involved less protrusion in lingual orthodontics than the labial treatment. Lingual orthodontic treatment is a better option in adult cases where intrusion of lower incisors without labial tipping is desired.

scholarly journals Evaluation of long-term stability of curve of Spee levelled with continuous archwires in two different retention protocol

2021 ◽  
Vol 11 ◽  
pp. 229-234
Author(s):  
Mansi Radia ◽  
Kalyani Trivedi ◽  
Alap Shah ◽  
Tilak Parikh ◽  
Hemangi Panchal
Keyword(s):  
Lower Incisor ◽  
Term Stability ◽  
Long Term Stability ◽  
Curve Of Spee ◽  
End Of Treatment ◽  
Lateral Cephalograms ◽  
Significant Difference ◽  
Group 2 ◽  
Group 1

Objectives: The objectives of the study were to assess the long-term stability of the curve of Spee leveled with continuous archwire in subjects with two different retention protocols. Materials and Methods: The study sample consisted of 20 patients (mean age 18 ± 2 years) presenting with curve of Spee depth of =/> 3 mm. For each subject, lateral cephalograms and dental casts were available before treatment (T1), at the end of orthodontic therapy (T2), and 1 year after the end of treatment (T3). All subjects were divided into two groups according to their retention protocol – fixed retainer group (Group-1) and Essix retainer group (Group-2). Cephalometric parameters were used to evaluate the dental movements after treatment. Curve of Spee depth was measured on standardized digital images of casts. Results: In multicomparison table, it shows that there was a statistically significant difference (P = 0.032) between Spee-T2 and Spee-T3 and there was no statistical difference (P = 0.159) between L1MP-T2 and L1MP-T3 in fixed retainer group. In Essix retainer group, no changes were observed from L1MP-T2 to L1MP-T3 and there was a non-significant difference found between Spee-T2 and Spee-T3. Conclusion: In Group-1 (fixed retainer), there is some amount of relapse or extrusion of lower incisor. In Group-2 (Essix retainer), there was not any change in the position of the lower incisor, which suggests that occlusal coverage of the Essix retainer does not allow any extrusion and retains the curve of Spee.

scholarly journals Comparison of cephalometric changes resulting from different upper incisor intrusion methods

2021 ◽  
Vol 11 (Suppl. 1) ◽  
pp. 176-193
Author(s):  
Demet Süer Tümen ◽  
Orhan Hamamcı
Keyword(s):  
Soft Tissue ◽  
Root Resorption ◽  
T Test ◽  
Upper Lip ◽  
Deep Bite ◽  
Lateral Cephalograms ◽  
Significant Difference ◽  
Student’S T ◽  
Cephalometric Changes ◽  
Student’S T Test

Aim: The aim of this study was to provide intrusion of upper incisors with applying Connecticut Intrusion Arch (CIA) and Miniscrew and to evaluate the dental and skeletal cephalometric effects of these intrusion methods on individuals with deep bite caused by supraocclusion of upper incisors. Methodology: The study includes 40 adults, without making sexual distinction, who have at least 4 mm deep bite caused by supraocclusion of upper incisors. Two study groups each consisting 20 individuals formed as CIA and Miniscrew groups. Skeletal, dental, soft tissue measurements were done on lateral cephalograms and apical root resorption measurements were done on standard periapical radiographs that were taken from upper four incisor teeth. Statistically, Paired Student’s t-test was used in intragroup comparements and independent Student’s t-test was used in the investigation of differences between groups. Nevertheless, the concern of variables that seen as risk factors with the amount of resorption was investigated with Pearson correlation analysis.  Results: Successful intrusion of four upper incisor teeth with CIA and Mini screw methods and in-significant difference was determined between two methods. Protrusion of upper and lower incisor teeth decrease in interincisal angle and overbite and increase in overjet was stated by intrusion at both of the methods. The decline of the mesiobuccal cusp of the upper first molar was observed in the CIA method. In soft tissue evaluation, decrease of upper lip length, upper lip thickness and distance of upper and lower lip to the Rickett’s plane was observed. Conclusion: The methods used for intrusion showed to cause similar ratio of root resorption.   How to cite this article: Süer Tümen D, Hamamcı O. Comparison of cephalometric changes resulting from different upper incisor intrusion methods. Int Dent Res 2021;11(Suppl.1):177-94. https://doi.org/10.5577/intdentres.2021.vol11.suppl1.26   Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.

scholarly journals Effects of Invisalign (G5) with virtual bite ramps for skeletal deep overbite malocclusion correction in adults

2021 ◽  
Author(s):  
Douglas Henick ◽  
Willy Dayan ◽  
Robert Dunford ◽  
Stephen Warunek ◽  
Thikriat Al-Jewair
Keyword(s):  
Comprehensive Treatment ◽  
Deep Bite ◽  
Fixed Appliance ◽  
Skeletal Changes ◽  
Mandibular Plane ◽  
Lateral Cephalograms ◽  
Sex Type ◽  
The Mean ◽  
Overbite Depth Indicator ◽  
Extraction Treatment

ABSTRACT Objectives To investigate the skeletal and dentoalveolar effects of Invisalign's G5 protocol with virtual bite ramps in the treatment of adults with skeletal deep bites. Materials and Methods This retrospective study was conducted on consecutively treated adults presenting with skeletal deep bites as defined by the Overbite Depth Indicator (ODI). Subjects were divided into 2 groups: Invisalign group (n = 24) treated with the Invisalign G5 protocol and a full fixed appliance (FFA) group (n = 24) treated with edgewise FFAs and matched to the Invisalign group by ODI, sex, type of malocclusion, and non-extraction treatment. Pretreatment (T1) and post–comprehensive treatment (T2) lateral cephalograms were obtained and analyzed. Results Both the Invisalign and FFA groups showed significant changes from T1 to T2 in ODI and other skeletal and dentoalveolar measurements. The mean change in ODI was −1.5° (P &lt; .001) for the Invisalign group and −2.0° (P &lt; .001) for the FFA group. The mean decrease in overbite was 1.3 mm (P &lt; .001) and 2.0 mm (P &lt; .001) for the Invisalign and FFA groups, respectively. The mean increase in mandibular plane angle (Sn-GoGn) was 0.65° (P = .003) for the Invisalign group and 1.15° (P &lt; .001) for the FFA group. When the groups were compared with each other, both ODI (P = .03) and overbite (P = .003) were significantly different in addition to other measurements. Conclusions Although FFA treatment had more apparent skeletal changes for deep bite adult patients when compared with Invisalign, both systems were effective in opening deep bites at dentoalveolar and skeletal levels.

Association of Curve of Spee with Vertical Skeletal Patterns

2020 ◽  
Vol 29 (04) ◽  
pp. 254-258
Author(s):  
Saad Abdul Rehman ◽  
◽  
Sadia Rizwan ◽  
Syed Shah Faisal ◽  
Syed Sheeraz Hussain
Keyword(s):  
Orthodontic Treatment ◽  
P Value ◽  
Lateral Cephalogram ◽  
Curve Of Spee ◽  
Mandibular Plane ◽  
Significant Difference ◽  
Line Angle ◽  
The Mean ◽  
Dent Assoc ◽  
One Way Anova

OBJECTIVE: To find the mean curve spee depth and association in three different skeletal vertical patterns (Hypodivergent, Normodivergent and Hyperdivergent). METHODOLOGY: Orthodontic models of mandibular arch and Lateral cephalogram of 110 patients with the mean age of 17.16±4 years, 26.4% (N=29) males and 73.6% (N=81) females were taken from the patients who visited for the orthodontic treatment, to the Department of Orthodontics of Karachi Medical and Dental College. Skeletal divergence defined by the mandibular plane (Lower border of mandible) to sella-nasion line angle (SN-MP). It was measured on lateral cephalogram and Curve of spee depth measured on mandibular cast. RESULTS:Out of 110 patients 20.9% (N= 23) were hypodivergent, 29.1% (N=32) were normodivergent and 50% (N=55) were hyperdivergent. The curve of spee among these three groups were 3.39±0.30mm, 2.62±0.23mm and 2.02±0.45mm. One-way ANOVA has been applied and it showed highly significant differences in the value of curve of spee depth among three vertical skeletal patterns with the p-value of 0.000. Moving from Hypodivergent to Hyperdivergent cases, the curve of Spee depth reduces. CONCLUSION: It has been found that there is a significant difference in curve of spee among hypodivergent, normodivergent and hyperdivergent patients. KEYWORDS: Dentistry, Curve of Spee, Vertical Skeletal Patterns, Orthodontic Diagnosis. HOW TO CITE: Rehman SA, Rizwan S, Faisal SS, Hussain SS. Association of curve of spee with vertical skeletal patterns. J Pak Dent Assoc 2020;29(4):254-258.

scholarly journals Correction of Class II Division 2 Malocclusion with Traumatic deep bite -Non-extraction Therapy

2018 ◽  
pp. 33-36
Author(s):  
Sharmin Sultana ◽  
Md Zakir Hossain
Keyword(s):  
Treatment Plan ◽  
Class Ii ◽  
Central Incisor ◽  
Lower Incisor ◽  
Deep Bite ◽  
Maxillary Central Incisor ◽  
Curve Of Spee ◽  
Lower Jaw ◽  
Extraction Therapy ◽  
Division 2

This case report describe the management of a 22 years old male patient having class II div 2 malocclusion with traumatic deep bite. Intraoral examination revealed that patient had lingually inclined maxillary central incisor, labially flared maxillary lateral incisors, exaggerated lower curve of spee, and moderate crowding in lower jaw. Patient also tend to exhibit deep mentolabial sulcus and unaesthetic smile. Anterior flat bite plane was treatment plan for improving deep bite and also Mandibular downward backward rotation and Camouflage nonextraction treatment was decided for this patient because presence of lower crowding which is easy to correction and flare lower incisor for improving overjet and interincisal angle.Ban J Orthod & Dentofac Orthop, April 2015; Vol-5 (1-2), P.33-36

scholarly journals Determination of Tweed's cephalometric norms in Bengali population

2017 ◽  
Vol 11 (03) ◽  
pp. 305-310
Author(s):  
Lalima Kumari ◽  
Anuranjan Das
Keyword(s):  
Treatment Planning ◽  
Mean Value ◽  
Diagnosis And Treatment ◽  
Mandibular Angle ◽  
Mandibular Plane ◽  
Normal Occlusion ◽  
Lateral Cephalograms ◽  
Males And Females ◽  
The Mean

ABSTRACT Objective: The purpose of this study was to establish Tweed's cephalometric norms for Indian Bengali population and to compare it with Caucasian norms. Materials and Methods: The participants were of 50 adults with normal occlusion and pleasant profile. Lateral cephalograms were taken in natural head position, and cephalometric norms were established using Tweeds diagnostic triangle. Results: The study showed more proclined lower incisors in comparison with Caucasians. The result of the study also indicated that separate norms should be considered for Bengali males and females during diagnosis and treatment planning as mean Frankfort mandibular angle value for females was found to be significantly higher than that of males (t 48= 2.97; P < 0.01) and the mean value of incisor mandibular plane angle for males was significantly higher than that of females. Conclusion: The findings emphasize the need for group-specific norms for orthodontic diagnosis and treatment planning and provide cephalometric standards for normal Bengali adults.

Precision bite ramps and aligners: An elective choice for deep bite treatment

2021 ◽  
pp. 146531252110341
Author(s):  
Mario Greco ◽  
Andrea Rombolà
Keyword(s):  
Successful Treatment ◽  
Clinical Studies ◽  
Treatment Plan ◽  
Deep Bite ◽  
Clinical Efficiency ◽  
Curve Of Spee ◽  
Lower Jaw ◽  
Maxillary Incisors ◽  
Lower Incisors

Objective: To review a series of clinical studies demonstrating the clinical efficiency of aligners with bite ramps in the treatment of severe deep bite. Materials and Methods: In order to predictably manage the correction of deep bite with aligners, precision bite ramps on maxillary incisors have been used while posterior extrusion and anterior intrusion in the lower jaw with lateral attachments and proper levelling of the curve of Spee have been planned. Transverse correction and controlled upper and lower incisors proclination completed the treatment plan. Results: Full deep bite correction with normal overbite was obtained in nine months of treatment by a combination of anterior intrusion and posterior torque correction, distal tipping and relative extrusion. Conclusion: The use of bite ramps represents a valid option for the successful treatment of deep bite with aligners creating proper space for lateral sector extrusion and supporting lower anterior intrusion and controlled proclination.

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