Pattern of third molar impaction in a Singapore Chinese population: a retrospective radiographic survey

Quek, Sy; Tay, Cho Jui; Tay, Kiang-Hiong; Toh, S.L.; Lim, Kart-Leong

doi:10.1016/s0901-5027(03)90413-9

Cited by 154 publications

(104 citation statements)

References 12 publications

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“…Our results showed that Level B was the most common (44.7%). This is in agreement with Quek et al 6 (80%), Sandhu and Kaur 20 (39%) and Padhye et al 2 (45.8%). Level A impaction was found to be more common in studies of Hattab et al 4 (58%) and Gupta et al 7 (61.8%).…”

Section: Discussionsupporting

confidence: 92%

“…Our method for determining the angular position was based on incorporating a system of measurements using a protractor to avoid errors arising from visual impression and to enable reproducibility of the results, a method commonly adopted in many studies. 2,6,20,21 Our results showed that 34.6% of third molars were mesioangular in position. This number is considerably lower than that reported by Hattab et al 4 (50%) Quek et al 6 (60%) and Kruger et al 22 (62.9%), but higher in proportion than that obtained by Byahatti and Ingafou 21 (23.7%).…”

Section: Discussionmentioning

confidence: 50%

“…2,6,20,21 Our results showed that 34.6% of third molars were mesioangular in position. This number is considerably lower than that reported by Hattab et al 4 (50%) Quek et al 6 (60%) and Kruger et al 22 (62.9%), but higher in proportion than that obtained by Byahatti and Ingafou 21 (23.7%). Our results were supported by findings of Sandhu and Kaur 20 and Padhye et al Level who reported a frequency of 31% and 35% respectively.…”

Section: Discussionmentioning

confidence: 50%

“…It has been suggested that 20-25 years is the most suitable age for studying the frequency and pattern of third molar impaction. 6 However, some changes in the angulation and position of third molars have been observed in older individuals. 17,18 This indicates that the eruption period for third molars is longer than that reported previously, yet it is difficult to define when a permanent tooth will remain unerupted.…”

Section: Discussionmentioning

confidence: 99%

“…2 The frequency of third molar impaction varies substantially among different populations; and was reported to range from 18% to 70%. [3][4][5][6][7] This can be attributed to racial variation in the pattern of facial growth and jaw and tooth size, which are crucial determinants of the eruption pattern. 2 The removal of impacted third molars is one of the most common procedures performed in the speciality of oral and maxillofacial surgery, 8 since these teeth are often associated with pathological conditions including pericoronitis, periodontitis, cystic lesions or root resorption.…”

Section: Introductionmentioning

confidence: 99%

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Pattern of third molar impaction in Libyan population: A retrospective radiographic study

Hatem

Bugaighis

Taher

2016

The Saudi Journal for Dental Research

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Objectives: The aim of the present study was to radiographically evaluate the pattern of third molar impaction in a sample of Libyan patients, in terms of age, gender, angulation of impaction, level of eruption and available retromolar space using panoramic radiographs. Furthermore, cross tabulation between patterns of impaction and gendernarch were evaluated for any significant difference. Study design: This retrospective study comprised 300 orthopantomograms (OPGs) of patients attending a private dental clinic in Benghazi between 2008 and 2013. Radiographic assessment was carried out to evaluate the prevalence of impaction, angular position of impaction, level of eruption and available retromolar space. Results were analysed using Pearson's coefficient test and Student's t-test Results: Among 1200 third molars reviewed, 843 (70%) were classified as impacted, of which 371 (44%) were in the maxilla and 472 (56%) were in the mandible. The most prevalent angular position was mesioangular (34.6%) followed by vertical (31.3%) and distoangular (27.7%). A significant association existed between angular position and arch (P < 0.001).Class IIA was the most common Pell and Gregory classification (38.6%). Significant association was found between the level of eruption and arch (P < 0.001). Bilateral impaction was more common than unilateral impaction in both arches. Conclusion: Our study highlights mesioangular impaction as the most frequently encountered angular position. The most common level of eruption was Level B; and the majority of impacted third molars (72.7%) had less than adequate space for eruption. ª 2015 The Authors. Production and hosting by Elsevier B.V. on behalf of King Saud University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 50%

Section: Discussionmentioning

confidence: 50%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Pattern of third molar impaction in Libyan population: A retrospective radiographic study

Hatem

Bugaighis

Taher

2016

The Saudi Journal for Dental Research

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References

2012

Pathology of the Hard Dental Tissues

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Permanent tooth emergence: Timing and sequence in a sample of Black Southern African children

Esan

Mothupi

Schepartz

2018

American J Phys Anthropol

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ObjectivesThis study investigates mean age, sequence, and temporal trends of permanent tooth emergence in Black Southern African children and compares the findings with other population samples.Materials and methodsThis community‐based cross‐sectional study involved 639 Black Southern African children between 5 and 20 years of age. Probit analysis was used to derive the mean age at emergence of the permanent teeth. Sex and cross‐population comparisons were undertaken to determine similarities and differences in emergence timing and sequence.ResultsFemales emerged all teeth earlier except for M3s (p < .05). Black Southern Africans have earlier mean ages of emergence compared to population samples from the USA, Europe, Australia, and Asia. Sexual dimorphism was detected in the mandibular I1/M1 emergence sequence (females, M1I1; males, I1M1). The sequence in males is similar in both jaws to males from other sub‐Saharan African, USA, and European samples. Females show a similar sequence pattern in the maxilla with other sub‐Saharan African, and also Australian and US females of European ancestry. There is a high frequency of polymorphism in the P1P2C1 emergence sequence, with significantly more P2P1C1 maxillary sequences seen among males. Polymorphic variation was common for the I1M1 sequence in both males and females.DiscussionMean age of tooth emergence among Black Southern African children is similar to children from most other sub‐Saharan African populations. No temporal change was seen in the mean age of emergence. Earlier permanent tooth emergence in Black Southern Africans is part of a general sub‐Saharan pattern that is distinct from European and Asian populations.

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Pattern of third molar impaction in a Singapore Chinese population: a retrospective radiographic survey

Cited by 154 publications

References 12 publications

Pattern of third molar impaction in Libyan population: A retrospective radiographic study

Pattern of third molar impaction in Libyan population: A retrospective radiographic study

References

Permanent tooth emergence: Timing and sequence in a sample of Black Southern African children

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