Pattern of mandibular third molar impaction: A cross-sectional study in northeast of Iran

Introduction: Growth and development is a dynamic process that is influenced by many factors, this is why children of the same age do not have the same growth rate, therefore growth can not be evaluated only by chronological age, but also by maturation skeletal and dental. Previous research has shown a strong relationship between mandibular length and Cervical Vertebral Maturation (CVM). The aim of the present study was to determine the correlation between mandibular length and mandibular third molar maturation using panoramic radiograph. Methods: This research is an observational analytic cross sectional study. Total 412 panoramic radiographs of 207 male and 205 female aged 9-25 years were evaluated. The mandibular length measured from the point of condylion (Co) to menton (Me). M3 maturation of the mandible was evaluated by Demirjian methods. Results: Spearman non-parametric correlation was used for analysis. A strong correlation was found between mandibular length and third molar development (in males: r=0.705 on the right side and are=0.729 on the left side; in females: are=0.755 on the right side and are=0.707 on the left side) Conclusion: There is a strong correlation between mandibular length and mandibular third molar maturation in both male and female.

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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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Evaluation of the Relationship between Mandibular Third Molar and Mandibular Canal by Different Algorithms of Cone-beam Computed Tomography

The Journal of Contemporary Dental Practice ◽

10.5005/jp-journals-10024-1609 ◽

2014 ◽

Vol 15 (6) ◽

pp. 740-745

Author(s):

Mojdeh Mehdizadeh ◽

Navid Ahmadi ◽

Mahsa Jamshidi

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Inferior Alveolar Nerve ◽

Third Molar ◽

Mandibular Canal ◽

Cross Sectional Study ◽

Cone Beam ◽

Cross Sectional ◽

Mandibular Third Molar ◽

The Relationship

ABSTRACT Objectives Exact location of the inferior alveolar nerve (IAN) bundle is very important. The aim of this study is to evaluate the relationship between the mandibular third molar and the mandibular canal by cone-beam computed tomography. Study design This was a cross-sectional study with convenience sampling. 94 mandibular CBCTs performed with CSANEX 3D machine (Soredex, Finland) and 3D system chosen. Vertical and horizontal relationship between the mandibular canal and the third molar depicted by 3D, panoramic reformat view of CBCT and cross-sectional view. Cross-sectional view was our gold standard and other view evaluated by it. Results There were significant differences between the vertical and horizontal relation of nerve and tooth in all views (p < 0.001). Conclusion The results showed differences in the position of the inferior alveolar nerve with different views of CBCT, so CBCT images are not quite reliable and have possibility of error. How to cite this article Mehdizadeh M, Ahmadi N, Jamshidi M. Evaluation of the Relationship between Mandibular Third Molar and Mandibular Canal by Different Algorithms of Cone-beam Computed Tomography. J Contemp Dent Pract 2014;15(6):740-745.

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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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A Retrospective Cross-Sectional Study of the Effect of Liposomal Bupivacaine on Postoperative Opioid Prescribing After Third Molar Extraction

Journal of Oral and Maxillofacial Surgery ◽

10.1016/j.joms.2021.02.012 ◽

2021 ◽

Author(s):

Stuart E. Lieblich ◽

Dale Misiek ◽

John Olczak ◽

Heidi Fleck ◽

Fanta Waterman

Keyword(s):

Third Molar ◽

Cross Sectional Study ◽

Sectional Study ◽

Cross Sectional ◽

Liposomal Bupivacaine ◽

Opioid Prescribing ◽

Third Molar Extraction ◽

Molar Extraction

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Association of Oral Hygiene and Periodontal Health with Third Molar Pericoronitis: A Cross-Sectional Study

BioMed Research International ◽

10.1155/2021/6664434 ◽

2021 ◽

Vol 2021 ◽

pp. 1-7

Author(s):

Mehmet Gagari Caymaz ◽

Oğuz Buhara

Keyword(s):

Health Status ◽

Oral Hygiene ◽

Dental Plaque ◽

Third Molar ◽

Cross Sectional Study ◽

Sectional Study ◽

Periodontal Health ◽

Cross Sectional ◽

Impacted Third Molar ◽

Molar Teeth

Background. Pericoronitis is a painful inflammatory condition commonly associated with third molar teeth. The purpose of this study was to investigate the relationship between oral hygiene and periodontal health status and the presence of pericoronitis in semi-impacted third molar teeth. Methods. A cross-sectional study was conducted, and 54 patients having at least one mandibular vertically semi-impacted third molar tooth with or without pericoronitis were consecutively enrolled. Subjects with pericoronitis and subjects with healthy third molars were selected according to symptoms in the gingiva overlying semi-impacted third molar teeth. Periodontal health status and oral hygiene were evaluated with the measures of plaque index (PI), gingival index (GI), and total number of sites with a probing depth PD ≥ 4 mm . The clinical data collected in this study was analyzed with Mann–Whitney U test using SPSS 20.0 package program. Results. The PI scores were found to be significantly higher in patients with pericoronitis ( p < 0.05 ). Although the GI scores and PD scores were higher in patients with pericoronitis, the difference did not reach statistical significance when compared with those in healthy subjects ( p > 0.05 ). Conclusion. The findings obtained in this study suggest that the amount of dental plaque was positively associated with third molar pericoronitis. Gingival and periodontal health conditions were similar between patients with and without pericoronitis. Improving oral hygiene and controlling dental plaque may help prevent third molar pericoronitis.

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Reasons and patterns for tooth extraction among patients presenting at a hospital of stomatology in Guangzhou, China: A cross-sectional study

10.21203/rs.3.rs-30798/v1 ◽

2020 ◽

Author(s):

Hongyu Li ◽

Zhiguo Liu ◽

Dongsheng Yu ◽

Haikuo Tang

Keyword(s):

Tooth Extraction ◽

Periodontal Diseases ◽

Age Groups ◽

Third Molar ◽

Cross Sectional Study ◽

Sectional Study ◽

Cross Sectional ◽

Posterior Teeth ◽

Old Patients ◽

Anterior Teeth

Abstract Background Few related surveys about reasons for tooth extraction was shown in mainland China. Our aim was to investigate the primary reasons and main pattern for extractions among patients presenting at a hospital of stomatology in Guangzhou, China. Methods This descriptive cross-sectional study was conducted over a period of 3 months, 2000 patients who underwent tooth extraction were recorded and analyzed by age, gender, the tooth type and the extraction reasons. Chi-square test was used to examine the differences in the extraction reasons between different genders, age groups and tooth types. Results A total of 3106 teeth were removed from 2000 patients, with an age ranging from 6 to 91. This study revealed details of extraction reasons and suggested that dental caries (25.42%) was the main reasons for tooth extraction and pointed out preventive extraction of third molar (19.89%) had displaced periodontal diseases (12.89%) as the dominant reason for extractions. Overall, third molar was the most frequently extracted tooth (1567). Significant statistical differences were found among different age groups, genders and tooth types for tooth extraction reasons (p༜0.05). For example, caries was the main reason for tooth extraction in 30–59 years old patients, while 20–29 years old patients asked for preventive extraction of third molar teeth mostly. Posterior teeth were mostly removed because of caries and periodontal disease was the leading cause for anterior teeth extraction. Conclusions We found the primary reasons and the new patterns for tooth extraction among patients in Guangzhou. It was proposed for the first time that the dominant reason for extractions was preventive extraction of third molar. Our finding could help to put forward some predictors and adjust the preventive strategies in oral disorders.

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Knowledge Attitude and Practice of General Practitioners and Interns Toward Late Mandibular Incisors Crowding; A Cross sectional study in Saudi Arabia.

10.53350/pjmhs2115103327 ◽

2021 ◽

Vol 15 (10) ◽

pp. 3327-3330

Author(s):

Ahmed Bahamid ◽

Mohannad Alwothainani ◽

Munirah Alotaibi ◽

Naif Alosaimi ◽

Nouf Alazzam ◽

...

Keyword(s):

Saudi Arabia ◽

General Practitioners ◽

Third Molar ◽

Cross Sectional Study ◽

Third Molars ◽

Sectional Study ◽

Cross Sectional ◽

Mandibular Incisor ◽

Dental Practitioners ◽

Mandibular Incisors

Objective: This study aimed to assess and compare the knowledge and awareness of dental interns and general practitioners in Saudi Arabia about late mandibular incisor crowding. Materials and methods: This is a cross-sectional study which was conducted between June 2020 and July 2020 in Saudi Arabia and it observed dental practitioners. Results: A total of 275 subjects were included in this study; 172 (62.5%) were dental interns, 157 (57.1%) were females and 211 (76.7%) dentists were aged between 23-26 years. While most general practitioners and dental interns have heard about late mandibular incisors crowding, the majority continue to abstain from not recommending extraction of lower third molar as a means of prevention. Around half of the respondents, 134 (48.7%), claimed that the eruption of lower third molars is a possible causative factor. A greater percentage of general dental practitioners, 32 (31.1%) believed that there is a correlation between late mandibular incisors crowding and cases of relapse after an orthodontic treatment. Moreover, male participants were more knowledgeable of the fact that cases may worsen if not treated (P = 0.019). The knowledge of lower third molars eruption (P = 0.002) and unerupted/impacted lower third molars (P = 0.034) ability to cause late mandibular incisors crowding and the prophylactic extraction of the lower third molars (P = 0.009) were also significantly differed across the various age groups. Conclusion: Late mandibular incisor crowding is one of the main clinical issues in dental practice which has been subject to decreased awareness among dentists. Keywords:Dentists, knowledge, late mandibular incisor crowding, Saudi Arabia.

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