Frequency of mandibular third molar surgical impactions in orthodontic patients with different antegonial notching

Background: Few studies have been reported so far on the frequency of lower third molar impactions in patients with different morphological characteristics. Our aim in this study was to find out the frequency of impacted lower third molars in orthodontic patients with different antegonial notch depths. Material and Methods: This cross-sectional research was conducted at Orthodontics Department of Dental Section, Faisalabad Medical University, Faisalabad, and de’Montmorency College of Dentistry, Lahore, Pakistan from June 2017 to June 2019. A total of 60 orthopantomograms (OPGs) of patients with impacted lower third molars were included. The depth of antegonial notch was calculated on all the selected OPGs by measuring distance between the deepest area of the notch cavity and the tangent on the inferior border of the mandible. The patients with depth of antegonial notch of 1 mm or less were labeled as having shallow antegonial notch, while those with 3 mm or more were considered as having deep antegonial notch. Percentages and mean + SD were calculated for different variables. Depth of antegonial notching was compared between genders using ANOVA with P-value <0.5 considered as significant. Results: Of 60 orthodontic patients, there was an equal number of male and female patients (n=30). The average age of the patients was 25.5±4 years. Overall frequency of impactions was similar in both the genders and frequency of impacted lower third molars was found to be greater in patients with deeper antegonial notches. Conclusion: Mandibular third molar impactions were most frequent in orthodontic patients with deep antegonial notches

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Assessment of role of mandibular third molar in lower anterior crowding among orthodontic patients of Kathmandu Nepal

Orthodontic Journal of Nepal ◽

10.3126/ojn.v10i3.35486 ◽

2020 ◽

Vol 10 (3) ◽

pp. 21-26

Author(s):

Bashu Dev Pant ◽

Anjana Rajbhandari ◽

Resina Pradhan ◽

Manju Bajracharya ◽

Surendra Maharjan ◽

...

Keyword(s):

Third Molar ◽

Cross Sectional Study ◽

Third Molars ◽

Chi Square ◽

Cross Sectional ◽

Anterior Crowding ◽

Mandibular Third Molar ◽

Significant Difference ◽

Orthodontic Patients

Introduction: Crowding in mandibular arch increases with increasing age and etiology of crowding is multifactorial in nature. Role of mandibular third molar in lower anterior crowding remains a topic of controvery over a period of century. The objective of this study was to assess whether there is any correlation between presence of mandibular third molar position and lower anterior crowding. Materials and Method: On the basis of third molar position one hundred and six sample of pretreatment orthodontic patients aged between 17 to 38 years were divided into erupted, erupting and agenesis group. The study was conducted in Peoples Dental College and Hospital from January 2020 to March 2020 after obtaining ethical approval from the institutional review committee. This cross-sectional study was done on dental casts and orthopantomogram; brass wire was used for measuring arch length and digital vernier caliper for measuring tooth material with modified segmental arch analysis method. Result: Among 106 samples collected 55 (51.88%) were female and 51(48.11%) were male and the mean age was 21.53 ± 3.91 years, Chi square and ANOVA test was used for Statistical analysis. This study showed no statistically significant differences between third molar position and lower anterior crowding on right (P= 0.68) and left side (P = 0.45). The study also showed that association between the third molar position and lower anterior crowding is more on left side compared to right side. Conclusion: Mandibular third molars have not statistically significant difference in lower anterior crowding so, extraction of third molars for relieving the anterior crowding is not justifiable

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Correlation Between the Maturation Stages of Mandibular Third Molars and Chronological Age in Patients Visiting Sardar Begum Dental College, Peshawar

Journal of Gandhara Medical and Dental Science ◽

10.37762/jgmds.5-2.79 ◽

2019 ◽

Vol 5 (2) ◽

pp. 3-7

Author(s):

Muhammad Ilyas ◽

Asma Khan ◽

Syed Murad Ali Shah ◽

Salman Khan ◽

Junaid Nadeem Malik

Keyword(s):

Pearson Correlation ◽

Third Molar ◽

Cross Sectional Study ◽

Chronological Age ◽

P Value ◽

Third Molars ◽

Cross Sectional ◽

Mandibular Third Molar ◽

Maturation Stages ◽

Mandibular Third Molars

OBJECTIVES: The objective of this study was to determine the correlation of chronological age with the maturation stages of mandibular third molar. METHODOLOGY: This descriptive, cross-sectional study was conducted at Sardar Begum Dental College, Gandhara University Peshawar on 384 patients from January 2018 to June 2018 and included patients having age 11-26 years with good quality Orthopantomogram showing mandibular third molar tooth germs bilaterally. Data were analyzed using SPSS version 22. p ≤ 0.05 was considered as statistically significant. RESULTS: Females 286 (74.5%) were predominant than males 98 (25.5%) with mean age presentation of 18.12±3.03 years. The most frequent stage of Demirjian’s stages of mandibular third molar was stage F (24.7%). Pearson correlation showed that maturation stages of mandibular third molars were significantly related to the chronological age ( r=0.446, p value=0.00). CONCLUSION: A correlation between maturation stages of mandibular third molars and chronological age existed.

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Is prophylactic extraction of mandibular third molar indicated? A retrospective study.

10.21203/rs.3.rs-32327/v1 ◽

2020 ◽

Author(s):

Zhouxi Ye ◽

Wenhao Qian ◽

Yubo Wu ◽

Bing Sun ◽

Zhiyao Li ◽

...

Keyword(s):

Soft Tissue ◽

Older Patients ◽

Third Molar ◽

P Value ◽

Third Molars ◽

Impacted Teeth ◽

Second Molar ◽

Mandibular Third Molar ◽

Mandibular Second Molar ◽

Mandibular Third Molars

Abstract Background To evaluate the associations of impaction patterns of mandibular third molars (M3Ms) with pathologies caused by them. Methods In this study, 262 patients with 432 impacted M3Ms were included. The pathologies include pericoronitis, mandibular second molar (M2M) caries, and M2M distal periodontal pathology. The impaction patterns of M3Ms and the pathologies were examined, and the M2Ms outcomes after the surgeries were evaluated. χ2 test was used to analyze the data and a P value of <0.05 was considered statistically significant. Results Pericoronitis was the major symptom in all patients, whereas the propensities of M2M distal caries and periodontal pathologies increased in older patients. Soft tissue impacted and vertically angulated teeth were more associated with the pericoronitis (p <0.05); Mesio-angular impacted teeth in less deep positions had greater risks of M2Ms distal caries (p <0.05); Mesio-angular and horizontal impacted teeth in relative deep positions were more likely to cause M2Ms distal periodontal pathologies (p <0.05). Conclusions Extractions of soft tissue impacted teeth in vertical angulations should be considered. While removals of mesially and horizontally angulated or bony impacted teeth could be delayed.

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Pathologies associated with the mandibular third molar impaction

Science Progress ◽

10.1177/00368504211013247 ◽

2021 ◽

Vol 104 (2) ◽

pp. 003685042110132

Author(s):

Zhou-Xi Ye ◽

Wen-Hao Qian ◽

Yu-Bo Wu ◽

Chi Yang

Keyword(s):

Soft Tissue ◽

Third Molar ◽

P Value ◽

Third Molars ◽

Impacted Teeth ◽

Second Molar ◽

District Center ◽

Mandibular Third Molar ◽

Mandibular Second Molar ◽

Mandibular Third Molars

To evaluate the associations of impaction patterns of mandibular third molars (M3Ms) with pathologies caused by them. In this study, 262 patients with 432 impacted M3Ms who referred in Shanghai Xuhui District Center were reviewed. The pathologies include pericoronitis, mandibular second molar (M2M) caries, and M2M distal periodontal pathology. The impaction patterns of M3Ms and the pathologies were examined, while the M2M outcomes after surgeries were evaluated. A χ2 test was used to analyze the data, with a p value of <0.05 being considered statistically significant. Pericoronitis was the major symptom in all patients, whereas the propensities of M2M distal caries and periodontal pathologies increased in older patients. Soft tissue impacted and vertically angulated teeth were more associated with pericoronitis ( p < 0.05); mesio-angular impacted teeth in less deep positions had greater risks of M2Ms distal caries ( p < 0.05); mesio-angular and horizontal impacted teeth in relative deep positions were more likely to cause M2Ms distal periodontal pathologies ( p < 0.05). Extractions of soft tissue impacted teeth in vertical angulations should be considered, while removals of mesially and horizontally angulated or bony impacted teeth could be delayed.

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Anatomical Position of Lower Third Molar in Relation to Mandibular Canal on Cone-Beam Computed Tomography Images in A Tertiary Care Hospital: A Descriptive Cross-sectional Study

Journal of Nepal Medical Association ◽

10.31729/jnma.5314 ◽

2020 ◽

Vol 58 (231) ◽

Author(s):

Bikash Chaudhary ◽

Ujjwal Joshi ◽

Pranaya Khanal ◽

Alok Sagtani ◽

Sirjana Dahal ◽

...

Keyword(s):

Tertiary Care ◽

Third Molar ◽

Mandibular Canal ◽

Cross Sectional Study ◽

Care Hospital ◽

Third Molars ◽

Cross Sectional ◽

Computed Tomography Images ◽

Mandibular Third Molar ◽

Mandibular Third Molars

Introduction: The positional relationship between the mandibularcanal with impacted mandibular third molar is the main factor of inferior alveolar nerve injury. The purpose of this study wasto classify the anatomical three dimensional relationship between the proximity of impacted mandibular third molars to the inferior alveolar canal. Methods: The descriptive cross-sectional study was conducted inthe Department of Oral and Maxillofacial Surgery of a tertiary care hospital from July 2020 to August 2020 after obtaining ethical approval from the Institutional Review Committee (Reference number 2506202001). Cone-beam computed tomography images of 200 patients’ mandibular third molars were used. A convenient sampling method was used. Data were analyzed using Statistical package for the Social Sciences. Results: Mandibular canal relative to the roots of the mandibular third molar was observed on the apical side in 104 (52.0%) and 173 (86.5%) third molars had direct contact with the mandibular canal. About 36 (97.3%) lingually placed mandibular third molars had contact with the mandibular canal. Conclusions: The findings of the study conclude that most of the mandibular third molars situated lingually had a higher occurrence of mandibular nerve involvement. The anatomic structures of the mandibular third molar and the mandibular canal may be helpful to draw upon the adequate surgical plan to avoidor reduce nerve involvement.

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Comparison of postoperative complications after impacted mandibular third molar extraction with conventional suturing versus tube drainage.

The Professional Medical Journal ◽

10.29309/tpmj/2020.27.07.4011 ◽

2020 ◽

Vol 27 (07) ◽

pp. 1408-1413

Author(s):

Wajid Ali Rajper ◽

Kashif Ali Channar ◽

Munawar Din Larik ◽

Sajid Ali Majeedano ◽

Aftab Ahmed Soomro ◽

...

Keyword(s):

Postoperative Complications ◽

Third Molar ◽

Mouth Opening ◽

P Value ◽

Third Molars ◽

Mandibular Third Molar ◽

Group A ◽

Impacted Mandibular Third Molars ◽

Group B ◽

Mandibular Third Molars

Objectives: To determine the effectiveness of tube drain compared with conventional suturing on postoperative complications after extraction of impacted mandibular third molars. Study Design: Cross Sectional study (Comparative). Setting: Department of Oral & Maxillofacial Surgery, Institute of Dentistry, LUMHS Jamshoro/Hyderabad. Period: Six months duration from 12-11-2015 to 13-05-2016. Material & Methods: All the patient age from 18 to 45 years irrespective of gender, having mesioangular impacted mandibular third molar were included in the study. Patients were divided into two groups, Group-A and group-B. The severity of pain was recorded by using Visual Analog Scale from 0 no pain to 10 worst pain, degree of swelling was measured by facial size through Amin and Laskin criteria and mouth opening was measured by interincisal distance through ruler. All data was recorded on the 3rd and 7th day by the clinician. Results: Mean age of group A was 31.22+7.21 years, and mean age of group B was 28.34+5.33 years. Male were found slightly more as compared to female. On 3rd day the post-operative pain assessment was almost equal in both groups p-value 0.06 and assessment of post-operative swelling on 3rd day was found with insignificant difference p-value 0.22. Assessment of pain on 7th post-operative day was that the severe pain was found significantly reduced in group B as compared to group A p-value 0.01, swelling was significantly reduced in group B p-value 0.04. While mouth opening was also found significantly more in group B as compared to group A p-value 0.022. Conclusion: After removal of impacted mandibular third molars, incorporating tube drain is very effective as compared to conventional suturing in reducing the facial swelling, trismus and postoperative pain.

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The ability of orthodontists and maxillofacial surgeons in predicting spontaneous eruption of mandibular third molar using panoramic serial radiographs

Dental Press Journal of Orthodontics ◽

10.1590/2177-6709.25.4.068-074.oar ◽

2020 ◽

Vol 25 (4) ◽

pp. 68-74

Author(s):

Mylena Ranieri Libdy ◽

Nicole Melres Rabello ◽

Leandro Silva Marques ◽

David Normando

Keyword(s):

Orthodontic Treatment ◽

Third Molar ◽

Panoramic Radiograph ◽

Third Molars ◽

The Third ◽

Mandibular Third Molar ◽

Panoramic Analysis ◽

Orthodontic Patients ◽

Mandibular Third Molars

ABSTRACT Objective: To evaluate the skill of orthodontists and oral/maxillofacial surgeons (OMFS) in providing a prognosis of mandibular third molars spontaneously erupted, through follow-up panoramic analysis. Methods: 22 orthodontic patients treated without extraction, presenting spontaneously erupted mandibular third molars (n = 44) were analyzed through panoramic serial radiographs. The first panoramic radiograph was obtained just after orthodontic treatment (PR1), in patients aging from 13 to 19 years. A second panoramic radiograph (PR2), was obtained in average two years later. The radiographs were randomly analyzed by 54 specialists, 27 orthodontists and 27 OMFS, to obtain the opinion about the approach to be adopted to these teeth in PR1. Then, another opinion was collected by adding a serial radiograph (PR1+2). Results: The concordance of the answers was moderate for OMFS (Kappa 0.44; p< 0.0001) and significant for orthodontists (Kappa 0.39; p< 0.0001). In the analysis of the first radiograph (PR1) of the spontaneously erupted molars, OMFS indicated extraction in 44.5% of cases, while orthodontists indicated in 42%, with no difference between groups (p= 0.22). In PR1+2 analysis, orthodontists maintained the same level of extraction indication (45.6%, p= 0.08), while surgeons indicated more extractions (63.2%, p< 0.0001). Conclusions: Orthodontists and OMFS were not able to predict the eruption of the third molars that have erupted spontaneously. Both indicated extractions around half of the third molars. A follow-up analysis, including one more radiograph, did not improve the accuracy of prognosis among orthodontists and worsened for OMFS.

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Dentists Perspective Regarding Prophylactic Removal Of Asymptomatic And Impacted Third Molars

Journal of Bahria University Medical and Dental College ◽

10.51985/jbumdc2018118 ◽

2019 ◽

Vol 09 (03) ◽

pp. 214-217

Author(s):

Wahab Buksh Kadri ◽

Sameera Asif ◽

Atif Zubairi ◽

Sarah Jamil ◽

Tooba Kamran ◽

...

Keyword(s):

Study Design ◽

Third Molar ◽

Cross Sectional Study ◽

P Value ◽

Dental Practice ◽

Third Molars ◽

Sectional Study ◽

Cross Sectional ◽

Dental Office ◽

General Dentists

Objective: To determine dentist’s perspective regarding NHS guidelines for prophylactic removal of Impacted Third molars among dentists of Karachi. Study Design and Setting: It was a cross sectional study design based on the questionnaire. Questionnaire was filled by total 110 general dentists selected by random sampling and was practicing in various private and government setups of Karachi to know about their preference regarding prophylactic removal of asymptomatic third molar. Methodology:The questionnaire comprised of total 13 questions to find out dentists view point about the prophylactic removal of impacted third molar. The results were then analyzed using SPSS version 23. Frequencies, percentages of different variables used in the study were calculated to identify the co-relation among different attributes. P-value of less than or equal to 0.05 was considered statistically significant. Results:The study reflected that 71.8% dentists were aware with the NHS Guidelines for removal of asymptomatic & impacted third molars while 28.2% dentists preferred conventional approach. The study also revealed Mesioangular impaction as being the most commonly observed type of impaction in the dental practice. Conclusion: It was concluded from this study that majority of dentists were aware of the guidelines provided by NHS and regarding the angulation of impacted teeth most of the impactions seen at the dental office were Mesioangular.

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ASSESSMENT OF ENAMEL DECALCIFICATION IN ORTHODONTIC PATIENTS

UNIVERSITY JOURNAL OF DENTAL SCIENCES ◽

10.21276/ujds.2020.6.1.20 ◽

2020 ◽

Vol 6 (1) ◽

pp. 28-30

Author(s):

MUKESH KUMAR ◽

Sommya Kumari ◽

Ambuj Chandna ◽

Dhirendra Pratap Singh ◽

Rameshwar Singh

Keyword(s):

Treatment Duration ◽

Treated Group ◽

White Spot ◽

P Value ◽

White Spot Lesion ◽

Duration Of Treatment ◽

Cross Sectional ◽

Male And Female ◽

Significant Difference ◽

Orthodontic Patients

Introduction: Enameldecalcification in the form of white spot lesion is a common complication seenin patients with fixed orthodontic appliances.Aims and Objective: To determine the prevalence of white spot lesionamongFixedorthodonticpatients,to compare the occurrence of WSL among the patients with lesser and greater duration of treatment, and to Fixed orthodontic compare between the gender groups.Materials & Method: A cross-sectional study was done to compare the prevalence of WSL between 300orthodontic patients and 100 non-orthodontic subjects. A further comparison was done between the meantreatment duration between orthodontic subjects of 6-18 months and >18 months, and between male and female samples. Subjects were visually examined on the second premolar to the second premolar in both maxillary andmandibulararchesusingGorelick'sWSL index. Descriptive statistics were calculated and independent t-test was used to compare the difference between the groups. The p-value <0.05 was considered significant.Result: The prevalence of WSL in orthodontic patients was 54.3%; among them, the prevalence was 40% inlesser treatment duration group and 68.7% in greater treatment duration group. The study found a significantdifference between the untreated non-orthodontic group and orthodontically treated group with respect to thenumber of teeth affected with WSL. Also, there was a significant difference between the categories oforthodontic treatment duration. There was no significant difference between male and female samples.Conclusion: Fixed orthodontic treatment increase the risk of white spot lesion. Duration of orthodontictreatment also showed a significant increase in the occurrence of WSL.

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Prevalence of dentigerous cysts due to impaction of mandibular third molar teeth

Padjadjaran Journal of Dentistry ◽

10.24198/pjd.vol25no1.15425 ◽

2018 ◽

Vol 25 (1) ◽

Author(s):

Hanifah Nuraini ◽

Harmas Yazid Yusuf ◽

Andri Hardianto

Keyword(s):

Dentigerous Cyst ◽

Maxillofacial Surgery ◽

Third Molar ◽

Odontogenic Cyst ◽

Age Group ◽

Third Molars ◽

Male And Female ◽

Mandibular Third Molar ◽

Dentigerous Cysts ◽

Mandibular Third Molars

Dentigerous cyst is an odontogenic cyst that surrounds the crown of an impacted tooth, caused by fluid accumulation between the reduced enamel epithelium and the enamel surface, usually associated with mandibular third molars. The purpose of this study was to find out the prevalence of dentigerous cyst caused by impaction of mandibular third molar at the oral and maxillofacial surgery department of Hasan Sadikin hospital Bandung. This study was a descriptive survey study. Samples were taken from the data of patient’s medical record from July 2006 until June 2011. The result of this study showed the number of oromaxillofacial cyst cases in the period was as much as 316 (0.78%). Dentigerous cyst was the most common odontogenic cyst (48,64%). Dentigerous cyst most commonly caused by impaction of the mandibular third molar (13,89%). The amount of male and female patients with dentigerous cyst was the same (50% each). The most age group that suffered dentigerous cyst due to impaction of the mandibular third molars was the age group of 41-50 years (40%). The most chosen therapy was enucleation (100%). From the results of this study can be concluded that dentigerous cyst due to impaction of mandibular third molars was the most common case, with the same frequency found in both male and female, the most age group of impacted was the age group of 41-50 years old, and the most chosen therapy was enucleation.

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