Journal of the korean academy of Pediatric Dentistry (대한소아치과학회지)

Korean Academy of Pediatric Dentistry (대한소아치과학회)
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Frequency of Buccal Pits and Defective Buccal Pits in Mandibular Molars of Children and Adolescents

소아청소년의 하악 대구치에서 협측소와 및 협측소와 결함의 발생 빈도

  • So Yung, Kim (Department of Pediatric Dentistry, College of Dentistry, Yonsei University) ;
  • Je Seon, Song (Department of Pediatric Dentistry, College of Dentistry, Yonsei University) ;
  • Ik-Hwan, Kim (Department of Pediatric Dentistry, College of Dentistry, Yonsei University) ;
  • Hyung-Jun, Choi (Department of Pediatric Dentistry, College of Dentistry, Yonsei University)
  • 김소영 (연세대학교 치과대학 소아치과학교실) ;
  • 송제선 (연세대학교 치과대학 소아치과학교실) ;
  • 김익환 (연세대학교 치과대학 소아치과학교실) ;
  • 최형준 (연세대학교 치과대학 소아치과학교실)
  • Received : 2022.03.15
  • Accepted : 2022.05.19
  • Published : 2022.08.31
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Abstract

A buccal pit is a prominent point-like depression that appears at the cervical end of the mandibular molar developmental grooves. A defective buccal pit can be defined as a buccal pit in which the continuity of the dentinoenamel junction is broken and the pit extends to the dentinal level. This study aimed to determine the frequency of buccal pits and defective buccal pits in un-erupted mandibular first and second molars using cone-beam computed tomography (CBCT). The analysis was performed on CBCT images taken from 417 Korean children and adolescents who visited the Department of Pediatric Dentistry, Yonsei University Dental Hospital between 2004 and 2020. Based on cross-sectional views of CBCT images, buccal pits were categorized into 4 classes according to the depth of the pits. The expression rate of the buccal pits was 29.1%. The prevalence of defective buccal pits was 7.9%. The buccal pits tended to develop bilaterally. To date, this is the most comprehensive study on the frequency of buccal pits with the largest sample size. This was the first attempt worldwide to analyze the depth of the buccal pit using CBCT images and to define a defective buccal pit worldwide.

협측소와는 하악 대구치 발달구의 말단에 나타나는 강한 점상의 함몰된 구조이다. 협측소와 결함은 협측소와가 상아질까지 침범한 상태로 정의할 수 있다. 이 연구는 콘빔 컴퓨터 단층촬영(CBCT) 분석을 통해 소아청소년의 하악 제1대구치 및 제2 대구치에서 협측소와 및 협측소와 결함의 발생 빈도를 조사하는 것을 목적으로 하였다. 연구는 2004년부터 2020년까지 연세대학교 치과병원 소아치과를 방문한 한국 소아청소년 417명을 대상으로 촬영한 CBCT 영상을 대상으로 수행하였다. 협측소와의 발현율은 29.1%로 보고되었다. 제4급 협측소와에 해당하는 협측소와 결함의 유병률은 총 7.9%였다. 협측소와는 양측성으로 나타나는 경향이 있었다. 이 연구는 협측소와의 빈도에 대해 가장 큰 표본 크기를 사용하여 시행한 포괄적인 연구이며, CBCT를 이용한 최초의 연구였다. 또한 협측소와 결함을 최초로 정의 내리고자 하였다.

Keywords

Acknowledgement

This study was supported by the student research fund from Oral Science Research Center, College of Dentistry, Yonsei University (2-2019-0079).

References

  1. Pfeiffer S : The relationship of buccal pits to caries formation and tooth loss. Am J Phys Anthropol, 50:35-37, 1978. https://doi.org/10.1002/ajpa.1330500106
  2. Oh SC : A Study on Morphology and Size of Clinical Crown of Permanent Mandibular Molar in Korean Adult. J Korean Acad Prosthodont, 37:242-255, 1999.
  3. Roberson TM, Heymann H, Swift EJ : Sturdevant's Art and Science of Operative Dentistry, 5th ed. Mosby, Philadelphia, 2006.
  4. Avinash J, Marya CM, Dhingra S, Gupta P, Kataria S, Bhatia HP : Pit and Fissure Sealants: An Unused Caries Prevention Tool. J Oral Health Comm Dent, 4:1-6, 2010.
  5. Altaf G, Garg S, Saraf BG, Sheoran N, Beg A, Anand M : Clinical Study of Pit and Fissure Morphology and its Relationship with Caries Prevalence in Young Permanent First Molars. J South Asian Assoc Pediatric Dent, 2:56-60, 2019.
  6. Re GJ, Pruitt D, Childers JM, Norling BK : Effect of mandibular molar anatomy on the buccal Class I cavity preparation. J Dent Res, 62:997-1001, 1983. https://doi.org/10.1177/00220345830620091701
  7. Khanna R, Pandey RK, Singh N : Morphology of Pits and Fissures Reviewed through Scanning Electron Microscope. Dentistry, 5:287, 2015.
  8. Gillings B, Buonocore M : Thickness of enamel at the base of pits and fissures in human molars and bicuspids. J Dent Res, 40:119-133, 1961. https://doi.org/10.1177/00220345610400010301
  9. Cho J, Kim DK : Study on the Shape and Depth of the Occlusal Central Fissure in Permanent Molar Teeth. J Korean Dent Assoc, 27:959-964, 1989.
  10. Jung SH, Song JS, Shin TJ, Hyun HK, Kim YJ, Kim JW, Lee SH, Jang KT : Relationship between Pre-Eruptive Buccal Pit Radiolucency and Restoration in Mandibular First Molar. J Korean Acad Pediatr Dent, 45:57-64, 2018. https://doi.org/10.5933/JKAPD.2018.45.1.57
  11. Demirtas O, Tarim Ertas E, Dane A, Kalabalik F, Sozen E : Evaluation of pre-eruptive intracoronal resorption on cone-beam computed tomography: A retrospective study. Scanning, 38:442-447, 2016. https://doi.org/10.1002/sca.21294
  12. Brooks JK : Detection of intracoronal resorption in an unerupted developing premolar: report of case. J Am Dent Assoc, 116:857-859, 1988. https://doi.org/10.14219/jada.archive.1988.0294
  13. Seow WK, Lu PC, McAllan LH : Prevalence of pre-eruptive intracoronal dentin defects from panoramic radiographs. Pediatr Dent, 21:332-339, 1999.
  14. Nanci A : Ten Cate's Oral Histology, 9th ed. Elsevier Mosby, St. Louis, 2016.
  15. Tucker AS, Sharpe PT : Molecular genetics of tooth morphogenesis and patterning: the right shape in the right place. J Dent Res, 78:826-834, 1999. https://doi.org/10.1177/00220345990780040201
  16. Tucker A, Sharpe P : The cutting-edge of mammalian development; how the embryo makes teeth. Nat Rev Genet, 5:499-508, 2004. https://doi.org/10.1038/nrg1380
  17. Symons AL, Chu CY, Meyers IA : The effect of fissure morphology and pretreatment of the enamel surface on penetration and adhesion of fissure sealants. J Oral Rehabil, 23:791-798, 1996. https://doi.org/10.1046/j.1365-2842.1996.d01-202.x
  18. Galil KA, Gwinnett AJ : Histology of fissures in human unerupted teeth. J Dent Res, 54:960-964, 1975. https://doi.org/10.1177/00220345750540053401
  19. Awazawa Y : Electron microscopic study on the hypomineralized enamel areas descending from the floors of occlusal fissures toward the amelo-dentinal junctions. J Nihon Univ Sch Dent, 8:33-44, 1966. https://doi.org/10.2334/josnusd1959.8.33
  20. Gwinnett AJ : Normal enamel. II. Qualitative polarized light study. J Dent Res, 45:261-265, 1966. https://doi.org/10.1177/00220345660450020701
  21. Seow WK : Developmental defects of enamel and dentine: challenges for basic science research and clinical management. Aust Dent J, 59(Suppl 1):S143-S154, 2014.
  22. Rada RE, Hasiakos PS : Current treatment modalities in the conservative restoration of amelogenesis imperfecta: a case report. Quintessence Int, 21:937-942, 1990.
  23. Witzel C, Kierdorf U, Schultz M, Kierdorf H : Insights from the inside: histological analysis of abnormal enamel microstructure associated with hypoplastic enamel defects in human teeth. Am J Phys Anthropol, 136:400-414, 2008. https://doi.org/10.1002/ajpa.20822
  24. Kumar GS : Orban's Oral Histology & Embryology, 14th ed. Elsevier India, New Delhi, 35-37, 2015.