Prevalence of distal surface caries in the second molar among referrals for assessment of third molars: a systematic review and meta-analysis

Toedtling, Verena; Devlin, Hugh; Tickle, Martin; O’Malley, Lucy

doi:10.1016/j.bjoms.2019.04.016

Cited by 19 publications

(21 citation statements)

References 27 publications

(25 reference statements)

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“…According to our results, 52.06% of participants had vertical impaction of MTM followed by mesioangular (38.99%) and horizontal (7.11%) positions in respect to Winter classification [8]. Studies revealed that greater number of mesioangular, horizontal and vertical type of MTM impactions in their studied population and there is no consensus related on this issue in literature [28,29]. Discrepancy be attributed to the differences in ethnicity.…”

Section: Discussionmentioning

confidence: 80%

The Radiological Evaluation of Mandibular Canal Related Variables in Mandibular Third Molar Region: a Retrospective Multicenter Study

Yılmaz¹,

Ataman-Duruel²,

Beycioğlu³

et al. 2022

JOMR

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Objectives:The aim of this retrospective study was to investigate anatomical structure of mandibular canal and the factors those increase the possibility of inferior alveolar nerve damage in mandibular third molar region of Turkish population. Material and Methods: Overall 320 participants with 436 mandibular third molars were included from four different study centers. Following variables were measured: type and depth of third molar impaction, position of mandibular canal in relation to third molars, morphology of mandibular canal, cortication status of mandibular canal, possible contact between the third molars and mandibular canal, thickness and density of superior, buccal, and lingual mandibular canal wall, bucco-lingual and apico-coronal mandibular canal diameters on cone-beam computed tomography scans. Results: Lingual mandibular canal wall density and thickness were decreased significantly as the impaction depth of mandibular third molar was increased (P = 0.045, P = 0.001 respectively). Highest buccal mandibular canal wall density and thickness were observed in lingual position of mandibular canal in relation to mandibular third molar (P = 0.021, P = 0.034 respectively). Mandibular canal with oval/round morphology had higher apico-coronal diameter in comparison to tear drop and dumbbell morphologies (P = 0.018). Additionally, mandibular canals with observed cortication border and no contact with mandibular third molar had denser and thicker lingual mandibular canal wall (P = 0.003, P = 0.001 respectively). Conclusions: Buccal and lingual mandibular canal wall density, thickness and mandibular canal diameter may be related with high-risk indicators of inferior alveolar nerve injury.

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Section: Discussionmentioning

confidence: 80%

The Radiological Evaluation of Mandibular Canal Related Variables in Mandibular Third Molar Region: a Retrospective Multicenter Study

Yılmaz¹,

Ataman-Duruel²,

Beycioğlu³

et al. 2022

JOMR

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“…Vertically located maxillary impacted third molars with an eruption level of position B were related with distal caries on second molars while mesioangularly located mandibular molars with position A mostly related with caries. There were studies in the literature which supported the high risk of distal caries on second molars associated with mesioangularly or horizontally located mandibular third molars ( 29 - 31 ). However, the number of studies on maxillary impacted third molars was quite limited.…”

Section: Discussionmentioning

confidence: 99%

Investigation of the prevalence of impacted third molars and the effects of eruption level and angulation on caries development by panoramic radiographs

Yıldırım¹,

Büyükgöze-Dindar²

2022

Med Oral

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Background This study is aimed to determine the prevalence of impacted third molars and to investigate the effects of their eruption level and angulation on caries formation in the distal of the adjacent tooth. Material and Methods This cross-sectional study was conducted on panoramic radiographs of 38481 patients who were admitted to the Trakya University, Faculty of Dentistry. The panoramic radiographs of 7998 patients with at least one impacted third molar were included. Third molars were classified according to Winter’s classification and Pell and Gregory’s classification. The frequency of caries in partially impacted third molars and adjacent second molars was determined. The chi-square tests were used to determine potential associations between the third molars' level of eruption, angulation, and caries development. Results The study group consisted of 4423 females (55.3%) and 3575 males (44.7%) with a mean age of 36.3±13.4 years. The prevalence of the third molar impaction rate was 23%. The impaction pattern of partially erupted third molars was characterized by an eruption level of A with the vertical position in both jaws. Partially erupted and vertically placed maxillary third molars in the level of position A caused more caries in the adjacent tooth and mesioangularly located partially erupted mandibular third molars were associated with more caries in the adjacent tooth. Conclusions The angulation and eruption level of partially erupted third molars should be carefully examined. The prophylactic extraction of vertically and mesioangularly located third molars, especially with an eruption level of position A can be suggested to eliminate the related complications and risk of caries. Key words: Dental caries, digital radiography, impacted tooth, panoramic radiography, third molar.

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“…The inclination of the impacted MTM to the long axis of the second molar tooth was classified by Winter in 1926, that is, mesioangular, horizontal, distoangular, vertical, obliquity, buccal/lingual transverse, inverse (Winter, 1926). Mesial and horizontal angulations of the MTM are more common than distal and vertical angulations (Iwanaga, Kunisada, et al, 2021;Toedtling et al, 2019). In general, mesially-angulated MTMs are removed by sectioning the tooth close to the cervical area of the tooth or more mesial/superior part of the tooth (meaning zone 1 or 2).…”

Section: Tooth Sectioning/bone Removal and Arterial Injurymentioning

confidence: 99%

The potential for facial artery injury during mandibular third molar extraction. An anatomical study using contrast‐enhanced computed tomography

et al. 2021

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The purpose of this study was to evaluate the risk of injury to the facial (FA) and related arteries during mandibular third molar (MTM) extraction using contrastenhanced computed tomography (CE-CT). CE-CT images of the MTM region were retrospectively reviewed. The area of the MTM was equally divided into three zones in the coronal images from mesial to distal, that is, zone 1, zone 2, and zone 3. The FA, submental artery (SMA), and sublingual artery (SLA) were identified. The distance from the mandible to FA, SMA, and SLA and the diameter of the FA, SMA, and SLA was measured in three zones, respectively. The thickness of the facial soft tissues and width of the mandible were measured at their maximum. The mean distance from the FA to the buccal cortical bone in zone 1, zone 2 and zone 3 was 2.24 mm, 2.39 mm and 1.67 mm, respectively. The SMA and SLA were found to be distal to the mandible. The mean diameter of the FA was 1.26 mm in males and 1.04 mm in females, respectively (p < 0.0001). The distance between the FA and buccal cortical bone of the mandible, and the patients' weight showed moderate correlation in zones 1 and 2. Based on our findings, the FA can be damaged if the surgical invasion reaches the facial soft tissues during MTM surgery. The patients' weight might be a good predictor for FA injury when CE-CT is not available.

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Prevalence of distal surface caries in the second molar among referrals for assessment of third molars: a systematic review and meta-analysis

Cited by 19 publications

References 27 publications

The Radiological Evaluation of Mandibular Canal Related Variables in Mandibular Third Molar Region: a Retrospective Multicenter Study

The Radiological Evaluation of Mandibular Canal Related Variables in Mandibular Third Molar Region: a Retrospective Multicenter Study

Investigation of the prevalence of impacted third molars and the effects of eruption level and angulation on caries development by panoramic radiographs

The potential for facial artery injury during mandibular third molar extraction. An anatomical study using contrast‐enhanced computed tomography

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