Third Molar and Their Relationship with Caries on the Distal Surface of Second Molar: A Meta-analysis

Objective: The aim of the study was to evaluate the frequency of distal caries in the second molar influenced by the angulation of the third molar adjacent on panoramic radiographs in a clinical dental radiology. Material and Methods: A descriptive and quantitative study that examined 750 panoramic radiographs, of this total, 120 were in accordance with the inclusion criteria of the study was conducted. Results: 157 seconds and third molars analyzed the prevalence of caries in the distal of the second molar was 25.5%. The most prevalent angle position of the third molar was 57.3% with the vertical, but the position with the highest percentage of decayed molar second distal mesioangular was 50% of the cases. The elements listed, males obtained 40% of second molar distal caries versus 17% for females. People aged 35 or older had the highest incidence with 50% distal caries while other bands obtained 16.21% in the group 18-24 years, and 23.52% in 25-34 years. Conclusion: It was possible to establish a sliding scale on the indication for prophylactic removal of mandibular third molar according to the angulation of Winter: horizontal, mesioangular, vertical and distoangular. One can also see a greater relevance to the indication of prophylactic removal of male individuals aged over 35 years.

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Association of Impacted Mandibular Third Molar with Caries on Distal Surface of Second Molar

Pesquisa Brasileira em Odontopediatria e Clínica Integrada ◽

10.4034/pboci.2019.191.22 ◽

2019 ◽

Vol 19 (1) ◽

pp. 1-8

Author(s):

Kalyana Chakravarthy Pentapati ◽

Srikanth Gadicherla ◽

Komal Smriti ◽

Ravindranath Vineetha

Keyword(s):

Third Molar ◽

Second Molar ◽

Impacted Mandibular Third Molar ◽

Mandibular Third Molar ◽

Distal Surface

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Factors associated with mandibular third molar eruption and impaction

Journal of Clinical Pediatric Dentistry ◽

10.17796/jcpd.30.2.k359u03v100586h3 ◽

2006 ◽

Vol 30 (2) ◽

pp. 109-114 ◽

Cited By ~ 6

Author(s):

Hung-Huey Tsai

Keyword(s):

Third Molar ◽

Mandibular Ramus ◽

Second Molar ◽

Gonial Angle ◽

Mandibular Plane ◽

Mandibular Third Molar ◽

Distal Surface ◽

Discriminatory Analysis ◽

Mandibular Second Molar ◽

Third Molar Eruption

A retrospective study, using panoramic radiographs, was conducted on 152 Taiwanese (72 males and 80 females) to investigate mandibular third molar eruption and impaction. The following measurements were made: inclinations and mesiodistal crown widths of the mandibular molars, vertical and horizontal spaces between the distal surface of the second molar and the anterior surface of the ramus, lengths and widths of the mandibular ramus and body, the ramus inclination, the mandibular plane angle, and the mandibular gonial angle. Differences between non-impaction and impaction groups were studied, and the variables were analyzed with multivariate discriminatory analysis. Significant differences between the two groups were found; variables describing spaces between the anterior of the ramus and the distal of the mandibular second molar and tooth size appeared to be the primary contributors to the differences observed.

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Effect of Surgical Intervention for Removal of Mandibular Third Molar on Periodontal Healing of Adjacent Mandibular Second Molar: A Systematic Review and Bayesian Network Meta-Analysis

Journal of Periodontology ◽

10.1902/jop.2015.150363 ◽

2016 ◽

Vol 87 (3) ◽

pp. 291-302 ◽

Cited By ~ 16

Author(s):

Luigi Barbato ◽

Zamira Kalemaj ◽

Jacopo Buti ◽

Michela Baccini ◽

Michele La Marca ◽

...

Keyword(s):

Systematic Review ◽

Bayesian Network ◽

Surgical Intervention ◽

Meta Analysis ◽

Third Molar ◽

Second Molar ◽

Mandibular Third Molar ◽

Mandibular Second Molar ◽

Periodontal Healing

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A systematic review of second molar distal surface caries incidence in the context of third molar absence and emergence

BDJ ◽

10.1038/s41415-020-1255-x ◽

2020 ◽

Vol 228 (4) ◽

pp. 261-266 ◽

Cited By ~ 1

Author(s):

Verena Toedtling ◽

Hugh Devlin ◽

Lucy O’Malley ◽

Martin Tickle

Keyword(s):

Systematic Review ◽

Third Molar ◽

Second Molar ◽

Distal Surface

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Incidence of Periodontal Pocket Development in Distal Root of Mandibular Second Molar Following Impacted Third Molar Removal in Compare to Using Bone Graft & Platelet rich Plasma

International Journal of Psychosocial Rehabilitation ◽

10.37200/ijpr/v24i5/pr201685 ◽

2020 ◽

Vol 24 (5) ◽

pp. 219-224

Author(s):

Samer Salim Jaafer

Keyword(s):

Bone Graft ◽

Platelet Rich Plasma ◽

Third Molar ◽

Periodontal Pocket ◽

Second Molar ◽

Impacted Third Molar ◽

Mandibular Second Molar

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Assessment of the Retromolar Canal in Taiwan Subpopulation: A Cross-Sectional Cone-Beam Computed Tomography Study in a Medical Center

Tomography ◽

10.3390/tomography7020020 ◽

2021 ◽

Vol 7 (2) ◽

pp. 219-227

Author(s):

Yen-Wen Shen ◽

Wan-Chun Chang ◽

Heng-Li Huang ◽

Ming-Tzu Tsai ◽

Lih-Jyh Fuh ◽

...

Keyword(s):

Medical Center ◽

Third Molar ◽

Mandibular Canal ◽

Cone Beam ◽

Horizontal Distance ◽

Taiwanese Population ◽

Mandibular Bone ◽

Second Molar ◽

The Third ◽

Retromolar Canal

The retromolar canal is an anatomical variation that occurs in the mandibular bone. The retromolar canal typically originates in the mandibular canal on the distal side of the third molar and extends forward and upward to the retromolar foramen (RMF), which contains the neurovascular bundle. Accidentally damaging the neurovascular bundle in the retromolar canal during the extraction of the third molar, dental implant surgery, or maxillofacial orthognathic surgery may lead to subsequent complications such as incomplete local anesthesia, paresthesia, and bleeding during operation. The objective of this study was to investigate the prevalence of the RMF in the Taiwanese population in a medical center by using dental cone-beam computed tomography (CBCT) and to identify the position of the RMF in the mandibular bone. The dental CBCT images for the mandibular bone of 68 hemi-mandible were uploaded to the medical imaging software Mimics 15.1 to determine the prevalence of the RMF in the Taiwanese population and the three positional parameters of the RMF in the mandibular bone: (1) The diameter of the RMF, (2) the horizontal distance from the midpoint of the RMF to the distal cementoenamel junction of the second molar, and (3) the vertical distance from the midpoint of the RMF to the upper border of the mandibular canal. Seven RMFs were observed in the 68 hemi-mandibles. Thus, the RMF prevalence was 10.3%. In addition, the diameter of the RMF was 1.41 ± 0.30 mm (mean ± standard deviation), the horizontal distance from the midpoint of the RMF to the distal cementoenamel junction of the the second molar was 12.93 ± 2.87 mm, and the vertical distance from the midpoint of the RMF to the upper border of the mandibular canal below second molar was 13.62 ± 1.3487 mm. This study determined the prevalence of the RMF in the Taiwanese population in a medical center and its relative position in the mandibular bone. This information can provide clinicians with a reference for posterior mandible anesthesia and surgery to ensure medical safety.

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