Factors associated with spontaneous angular changes of impacted mandibular third molars as a result of second molar protraction

2019 ◽  
Vol 156 (2) ◽  
pp. 178-185 ◽  
Author(s):  
Un-Bong Baik ◽  
Mohamed Bayome ◽  
Noha Hussein Abbas ◽  
Jae Hyun Park ◽  
Ui-Lyong Lee ◽  
...  
Keyword(s):  
Third Molars ◽  
Second Molar ◽  
Factors Associated ◽  
Impacted Mandibular Third Molars ◽  
Mandibular Third Molars

scholarly journals Factors associated with spontaneous mesialization of impacted mandibular third molars after second molar protraction

2019 ◽  
Vol 90 (2) ◽  
pp. 181-186
Author(s):  
Un-Bong Baik ◽  
Jin Hye Kang ◽  
Ui-Lyong Lee ◽  
Nikhilesh R Vaid ◽  
Yoon-Ji Kim ◽  
...  
Keyword(s):  
Third Molar ◽  
Regression Analyses ◽  
Third Molars ◽  
Second Molar ◽  
Factors Associated ◽  
The Third ◽  
Mandibular Second Molar ◽  
Impacted Mandibular Third Molars ◽  
Mandibular Third Molars ◽  
Mandibular First Molar

ABSTRACT Objectives: To investigate factors associated with spontaneous mesialization of impacted third molars after second molar protraction to close the space caused by a missing mandibular first molar (L-6) or retained deciduous mandibular second molars with a missing succedaneous premolar (L-E). Materials and Methods: Panoramic radiographs of patients treated with mandibular second molar protraction to close the space due to missing L-6 or L-E (14 males, 36 females, mean age = 18.6 ± 4.4 years) were analyzed before treatment (T1) and after second molar protraction (T2). Factors associated with the amount of third molar mesialization were investigated using regression analyses. Results: Mandibular second molars were protracted by 5.1 ± 2.1 mm and 5.8 ± 2.7 mm, measured at the crown and root furcation, respectively. After second molar protraction, third molars showed spontaneous mesialization by 4.3 ± 1.6 mm and 3.8 ± 2.6 mm, measured at the crown and root furcation, respectively. Nolla's stage of the third molar at T1 (B = 0.20, P = .026) and second molar protraction time (B = 0.04, P = .042) were significantly associated with the amount of third molar mesialization. Conclusions: Greater third molar mesialization was observed when Nolla's stage of the third molar was higher before treatment and when the second molar protraction time was longer.

scholarly journals Flap vs flapless technique for impacted third molar removal: A split mouth prospective randomized control study

2021 ◽  
Vol 7 (3) ◽  
pp. 167-171
Author(s):  
Neeraj ◽  
Banshilal Beniwal ◽  
Padmanidhi Agarwal ◽  
Vikas Berwal ◽  
Richa Malik
Keyword(s):  
Healing Process ◽  
Third Molar ◽  
Mouth Opening ◽  
Third Molars ◽  
Pocket Depth ◽  
Second Molar ◽  
Group I ◽  
Flap Design ◽  
Impacted Mandibular Third Molars ◽  
Mandibular Third Molars

The aim of this study was to compare the post-operative sequelae of removal of impacted third molars in participants treated with conventional flap elevation technique or with a minimally invasive flapless technique. Participants with bilaterally impacted mandibular third molars were included. They were divided into two sites constituting 2 groups. One group was operated by using conventional flap design and elevation and other with flapless technique. Objective clinical parameters were recorded and compared in the post-operative period like mouth opening, swelling, surgical time, and pocket depth. Subjective parameters including pain were also assessed and statistically analyzed. The sites operated in Group II (Flapless technique) had better results (p≤0.05) in terms of pain, swelling, trismus, and pocket depth distal to second molar when compared to Group I (Flap). The flapless technique gives better surgical results and improved healing process after third molar removal and so should be recommended in routine clinical practice.

scholarly journals Vertical eruption patterns of impacted mandibular third molars after the mesialization of second molars using miniscrews

2014 ◽  
Vol 86 (4) ◽  
pp. 565-570 ◽  
Author(s):  
Un-Bong Baik ◽  
Yoon-Ah Kook ◽  
Mohamed Bayome ◽  
Je-Uk Park ◽  
Jae Hyun Park
Keyword(s):  
Third Molar ◽  
Control Group ◽  
Third Molars ◽  
Panoramic Radiographs ◽  
Second Molar ◽  
Space Closure ◽  
Impacted Mandibular Third Molars ◽  
Group 2 ◽  
Mandibular Third Molars ◽  
Group 1

ABSTRACT Objective:  To investigate (1) whether vertical eruption of impacted third molars improves after mesialization of second molars and (2) what factors affect the vertical eruption of impacted third molars when space caused by missing molars is successfully closed by mesialization of the second molar using miniscrews. Materials and Methods:  The treatment group (Group 1) included 52 patients who had (1) missing mandibular first molars (ML-6) or missing deciduous mandibular second molars (ML-E), (2) initially impacted mandibular third molars, and (3) successful space closure of the edentulous area with orthodontics. Panoramic radiographs at start of treatment (T1) and at time of space closure (T2) were collected. The control group (Group 2) included 46 nonedentulous patients with impacted mandibular third molars without molar protraction treatment. Panoramic radiographs with similar T1/T2 treatment times were selected. Nine measurements were obtained regarding horizontal available space, vertical eruption, and third molar angulation. Results:  Third molars erupted vertically an average of 2.54 mm in Group 1 compared with 0.41 mm in Group 2. Age, gender, Nolla stage, and angle of the third molars did not show significant correlations with the vertical change of the impacted third molars, whereas the depth of third molar impaction and available space showed significant correlations. Conclusions:  Impacted mandibular third molars vertically erupt as a result of uprighting with mesialization of the second molar, and vertical eruption is affected by the initial vertical location of impacted third molars and available space.

Prevalence of Distal Cervical Caries in Mandibular Second Molar caused by impacted third molar

2021 ◽  
Vol 15 (12) ◽  
pp. 3253-3256
Author(s):  
M Arshman Khan ◽  
Talib Hussain ◽  
Bilal Z. Babar ◽  
Sikandar J. Bajwa ◽  
S. Ghani ◽  
...  
Keyword(s):  
Tooth Loss ◽  
Early Recognition ◽  
Demographic Data ◽  
Third Molar ◽  
Third Molars ◽  
Second Molar ◽  
Impacted Third Molar ◽  
Mandibular Second Molar ◽  
Impacted Mandibular Third Molars ◽  
Mandibular Third Molars

Aim: To analyse early recognition of the distal cervical caries of mandibular second molar caused by impacted mandibular third molar, to correlate oral health and caries status and to find out the average age groups and gender affected by impacted third molar Methods: A cross-sectional survey of 300 participants was conducted over a 15-month period at Rehmat Memorial Hospital, Abbottabad. 300 participants having impacted third molar having distal cervical caries in mandibular second molar were analyzed clinically and radiographically. Data was analyzed using SPSS version 23.0 Results: the demographic data of 300 patients with impacted mandibular third molars were analyzed. 64% were male and 36% female that have extractions due to impaction. Caries caused in more than half of participants by mesioangular impaction, which was 52%, 3% due to distoangular, 26% due to distal, and 18% due to horizontal impaction. In 63.25% of cases, teeth were lost due to caries, periodontitis caused 20.25% of tooth loss, pericoronitis 7.75%, orthodontics 3.75%, prosthodontics 1.2%, trauma 1%, and other factors were 2.5%. study reveals that 30.5 % of the extractions were done from 21 and 30 years and 23 %of extractions were performed. 40% of those who took part in the study did not brush their teeth. Socioeconomic status also has a great impact on tooth extractions. Conclusion: After conducting this study, it was concluded that there was a relationship between the prevalence of distal cervical caries in mandibular second molars and the placement of neighbouring impacted mandibular third molars. As a result, the extraction of mandibular third molars should be done to avoid cavities and premature tooth loss in the neighboring molar. Key words: Third molar impaction, distoangular, distal cervical caries, extraction, 2nd molar caries

scholarly journals Comparison of Digital OPG and CBCT in Assessment of Risk Factors Associated with Inferior Nerve Injury during Mandibular Third Molar Surgery

Diagnostics ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 2282
Author(s):  
Rakhi Issrani ◽  
Namdeo Prabhu ◽  
Mohammed Sghaireen ◽  
Hasna Rasheed Alshubrmi ◽  
Amal Mohamed Alanazi ◽  
...  
Keyword(s):  
Inferior Alveolar Nerve ◽  
Third Molar ◽  
Mandibular Canal ◽  
Third Molars ◽  
Factors Associated ◽  
Impacted Third Molar ◽  
Mandibular Third Molar ◽  
Mandibular Molar ◽  
Impacted Mandibular Third Molars ◽  
Mandibular Third Molars

Background: Pre-operative radiographic assessment of the anatomical relationship between the roots of the mandibular third molar and the inferior alveolar nerve (IAN) is a must to minimize the risk of IAN injury during surgery. Objectives: To compare the radiographic signs of digital orthopantomogram (OPG) and cone-beam computed tomography (CBCT). An additional objective was to assess the cortex status between the mandibular canal and third molar on CBCT images in relation to the demographic characteristics, region (right or left side), and angulation of mandibular molar. Methodology: In this retrospective study, a total of 350 impacted mandibular third molars with a close relationship between the inferior alveolar canal (IAC) and impacted mandibular third molars on digital OPG were further referred for CBCT imaging for assessment of the position of the mandibular canal. The study was conducted between August 2018 and February 2020. Digital OPGs were evaluated for radiographic signs like interruption of the mandibular canal wall, darkening of the roots, diversion of the mandibular canal, and narrowing of the mandibular canal. The age and sex of patients, site of impacted third molar, Winter’s classification of mandibular third molar, position of IAC relative to impacted molar, and the radiographic markers of OPG were assessed for cortical integrity using CBCT. Chi square testing was applied to study the values of difference and binomial logistic regression was done to assess the factors associated with cortication. Statistical significance was set at p ≤ 0.05. Results: Among 350 patients, 207 (59.1%) were male and 143 (40.9%) were female with a mean age of 36.8 years. The most common OPG sign was interruption of white line, seen in 179 (51.1%) cases. In total, 246 cases (70.3%) showed an absence of canal cortication between the mandibular canal and the impacted third molar on CBCT images. Cortication was observed in all cases with a combination of panoramic signs which was statistically significant (p = 0.047). Cortication was observed in 85 (50.6%) cases where IAC was positioned on the buccal side, 11 (16.9%) in cases of inferiorly positioned IAC, and just 8 (7.6%) for cases of lingually positioned IAC which was statistically significant (p = 0.003). Statistically insignificant (p > 0.05) results were noted for cortex status in CBCT images with regards to the age, sex, site, and angulation of impacted third molars. Conclusion: CBCT imaging is highly recommended for those cases where diversion of the mandibular canal is observed on OPG and when the roots are present between canals.

scholarly journals Assessment of Lingual Nerve Paresthesia after Removal of Mandibular Third Molar

2021 ◽  
pp. 253-259
Author(s):  
V. Usha ◽  
G. Rajabackiyam ◽  
K. Prabhu Sankar ◽  
Varun Muthuraman ◽  
Aravind Christo ◽  
...  
Keyword(s):  
Root Resorption ◽  
Third Molar ◽  
Lingual Nerve ◽  
Surgical Removal ◽  
Third Molars ◽  
Second Molar ◽  
Mandibular Third Molar ◽  
Impacted Mandibular Third Molars ◽  
The Common ◽  
Mandibular Third Molars

Surgical removal of impacted mandibular third molars are the most commonly performed minor surgical procedures by maxillofacial surgeon. If not treated can lead to few complications like pericoronitis, root resorption of second molar, caries of second molar, cyst and tumours can arise from them. The common complications include swelling, hematoma, trismus and lingual nerve injuries. In this article 1000 cases of various types impactions were surgically operated and assessment of lingual nerve injury was done.

scholarly journals Radiographic Position of Impacted Mandibular Third Molars and Their Association with Pathological Conditions

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Zahra Haddad ◽  
Mansour Khorasani ◽  
Mahin Bakhshi ◽  
Maryam Tofangchiha ◽  
Zeynab shalli
Keyword(s):  
Risk Factors ◽  
Risk Factor ◽  
Root Resorption ◽  
Mandibular Canal ◽  
Third Molars ◽  
Second Molar ◽  
Pathological Lesions ◽  
Pathological Conditions ◽  
Impacted Mandibular Third Molars ◽  
Mandibular Third Molars

Objectives. This study aimed to assess the radiographic position of impacted mandibular third molars (IMTMs) and their association with pathological conditions. Materials and Methods. The impaction depth, relationship with ramus, and angulation of 1600 IMTMs and their association with 2nd molar distal caries and root resorption, pathological conditions, and proximity to the mandibular canal were evaluated on panoramic radiographs. The IMTM position was determined based on the depth of impaction according to the Pell and Gregory classification, relationship with ramus according to the Pell and Gregory classification, and angulation according to the Winter’s classification. The classical and Bayesian logistic regressions were applied to analyze the effect of IMTM position on the associated complications using the odds ratio (OR) and 95% confidence interval (credible interval for Bayesian models). Two-tailed P value < 0.05 was considered statistically significant. Results. Of 1600 IMTMs evaluated in this study, 195 (12.2%), 252 (15.8%), and 119 (7.4%) had caused second molar distal caries, second molar root resorption, and pathological lesions, respectively, and 872 (54.5%) had contact with the mandibular canal. Impaction angulation was a risk factor for second molar distal caries (maximum OR = 5.01, 95% CI: 3.12–8.18). Changed angulation and greater impaction depth were the risk factors for second molar root resorption (minimum OR = 1.64, 95% CI: 0.58–4.02). Decreased distance between the ramus and distal side of the second molar was a risk factor for associated pathological lesions (minimum OR = 2.73, 95% CI: 1.79–4.25). Mesioangular and horizontal angulations and greater impaction depth were the risk factors for contact with the mandibular canal (maximum OR = 3.44, 95% CI: 2.6–4.57 and minimum OR = 1.3, 95% CI: 094–1.8). Conclusions. The frequency of complications associated with IMTMs was low, but considerable. The occurrence of these conditions might be affected by the impaction position. Thus, regular follow-ups are recommended in order to be able to surgically intervene when the first signs of pathologies arise.

scholarly journals Prevalence of Distal Carious Lesions in Mandibular Second Molars Due to Mesio-Angular Impacted Third Molars

2021 ◽  
Vol 30 (1) ◽  
pp. 50-55
Author(s):  
Talha Ashar ◽  
◽  
Asma Shakoor ◽  
Sadia Ghazal ◽  
Naghma Parveen ◽  
...  
Keyword(s):  
Third Molar ◽  
Data Entry ◽  
Target Population ◽  
Dental Arch ◽  
Third Molars ◽  
Cross Sectional ◽  
Second Molar ◽  
Carious Lesions ◽  
Impacted Mandibular Third Molars ◽  
Mandibular Third Molars

OBJECTIVE: This study was conducted to observe the relationship of mesio-angular impacted third molars to the development of distal caries in adjacent second molars. METHODOLOGY: This cross-sectional study was conducted at Nishtar Institute of Dentistry, Multan. Nine hundred and eighty nine periapical, bitewing and Panoramic radiographs were recorded and examined for distally carious second molars and impacted mandibular third molars. SPSS version 23.0 was used for data entry and analysis. RESULTS: Almost 40.8% of the target population reported with distal caries due to third molar impactions. A total of 53.30% of these impactions were of the mesio-angular variety. No distal caries was detected in transverse type of impactions. CONCLUSION: The current study concluded that the prevalence of distal caries in mandibular second molars and the positioning of adjacent impacted mandibular third molars in the dental arch were interlinked. Consequently, extraction of mandibular third molars should be considered to prevent caries and premature loss of second molar teeth. KEYWORDS: Distal caries, Impacted third molar, Infections, Risk Factor HOW TO CITE: Ashar T, Shakoor A, Ghazal S, Parveen N, Saleem MN, Raja HZ. Prevalence of distal carious lesions in mandibular second molars due to mesio-angular impacted third molars. J Pak Dent Assoc 2021;30(1):50-55.

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