대한소아치과학회지 (Journal of the korean academy of Pediatric Dentistry)

  • 제46권1호
  • /
  • Pages.101-110
  • /
  • 2019
  • /
  • 1226-8496(pISSN)
  • /
  • 2288-3819(eISSN)
대한소아치과학회 (Korean Academy of Pediatric Dentistry)
권호 표지
DOI QR코드

DOI QR Code

정중 과잉치 법랑질의 SEM/EDS 분석

SEM/EDS Analysis of the Enamel in Mesiodens

  • 오나경 (경북대학교 치의학대학원 소아치과학교실) ;
  • 이제식 (경북대학교 치의학대학원 소아치과학교실) ;
  • 남순현 (경북대학교 치의학대학원 소아치과학교실) ;
  • 권태엽 (경북대학교 치의학대학원 치과생체재료학교실) ;
  • 김현정 (경북대학교 치의학대학원 소아치과학교실)
  • Oh, Nakyeong (Department of Pediatric Dentistry, School of Dentistry, Kyungpook National University) ;
  • Lee, Jaesik (Department of Pediatric Dentistry, School of Dentistry, Kyungpook National University) ;
  • Nam, Soonhyeun (Department of Pediatric Dentistry, School of Dentistry, Kyungpook National University) ;
  • Kwon, Taeyub (Department of Dental Biomaterials, School of Dentistry, Kyungpook National University) ;
  • Kim, Hyunjung (Department of Pediatric Dentistry, School of Dentistry, Kyungpook National University)
  • 투고 : 2018.09.04
  • 심사 : 2018.10.15
  • 발행 : 2019.02.28
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

이 연구는 정중 과잉치 법랑질의 구조학적 및 형태학적 특징에 대하여 주사형 전자현미경(FE-SEM)과 에너지 분산형 분광분석법(EDS)을 이용하여 관찰하고 영구 중절치와 유중절치의 법랑질 구조 및 형태와 차이점에 대하여 평가하고자 하였다. 15개의 정중 과잉치, 영구 중절치와 유중절치를 이용하였으며, 법랑질의 두께와 법랑소주 직경에 대하여 FE-SEM을 이용하여 측정 및 관찰하고, 성분 분석을 위하여 EDS를 이용하였다. 그 결과 법랑소주 두께의 경우 영구 중절치, 정중 과잉치, 유중절치 순으로 나타났다. 법랑소주의 직경의 경우 영구중절치와 정중 과잉치에서는 유의할 만한 차이가 없었으며, 유중절치는 두 그룹에 비해서 작게 나타났다. 성분 분석 시 칼슘의 경우 영구 중절치와 정중 과잉치에 있어서 통계적 유의성이 없었으며, 유중절치는 작게 나타났다. Ca/P ratio의 경우 정중 과잉치와 영구 중절치는 비슷한 수치를 나타내며 통계적 유의성이 없었고, 유중절치보다는 두 그룹 모두 높게 나타났다. Ca/C ratio의 경우 마찬가지로 정중 과잉치와 영구 중절치에서 유중절치보다 높게 나타났다. 이를 통하여 정중 과잉치의 법랑질 특성은 유중절치보다는 영구 중절치와 더 유사함을 알 수 있고, 임상적으로 정중 과잉치의 활용 시 영구 중절치와 비슷한 법랑질 성질을 지님을 유추할 수 있다.

The aim of this study was to evaluate and compare the microstructural properties and mineralization quality of mesiodens with permanent and primary central incisors. Fifteen mesiodens, permanent and primary central incisors were collected. The enamel rod diameter and enamel thickness were observed and measured using field emission scanning electron microscope (FE-SEM). Chemical composition of the enamel was analyzed using energy dispersive X-ray spectrometer (EDS). The measurements were then assessed using the one-way ANOVA and Tukey test. There was no statistically significant difference in the enamel rod diameter between mesiodens and permanent central incisors. However, enamel rods of primary central incisors were smaller than remaining two groups. The thickness of enamel was thick in order of permanent central incisors, mesiodens, primary central incisors. In the composition analysis using EDS, there was no difference in the Ca/P ratio and Ca/C ratio between mesiodens and permanent central incisors, but small in primary central incisors. In conclusion, the microstructural properties of mesiodens were more similar to those of permanent central incisors compared to primary central incisors. Futher, the mineralization quality of mesiodens did not differ significantly from that of permanent central incisors.

키워드

참고문헌

  1. Primosch RE : Anterior supernumerary teeth - assessment and surgical intervention in children. Pediatr Dent, 3:204-215, 1981.
  2. Parolia A, Kundabala M, Tomas MS, et al. : Management of supernumerary teeth. J Conserv Dent, 14:221-224, 2011. https://doi.org/10.4103/0972-0707.85791
  3. Lee YS, Kim JW, Lee SH : A study of the correlation between the features of mesiodens and complications. J Korean Acad Pediatr Dent, 26:275-283, 1999.
  4. Mitchell L : An Introduction to Othodontics, 1st ed. Oxford University Press, 23-25, 1996.
  5. Choi BJ, Lee YS, Kim SO, Lee JH : Study of invertly im pacted supernumerary teeth in the midpalatal region using computerized tomography. J Korean Acad Pediatr Dent, 30:363-372, 2003.
  6. Nam OH, Lee HS, Choi SC, et al. : Characteristics of mesiodens and its related complications. Pediatr Dent, 37:105-109, 2015.
  7. Giancotti A, Grazzini F, Arcuri C, et al. : Multidisciplinary evaluation and clinical management of mesiodens. J Clin Pediatr Dent, 26:233-237, 2002.
  8. Tyrologou S, Koch G, Kurol J : Location, complications and treatment of mesiodentes - a respective study in children. Swed Dent J, 29:1-9, 2005.
  9. Asaumi JI, Shibata Y, Kishi K, et al. : Radiographic examination of mesiodens and their associated complications. Dentomaxillofac Radiol, 33:125-127, 2004. https://doi.org/10.1259/dmfr/68039278
  10. Hurlen B, Humerfelt D : Characteristics of premaxillary hypertonia. A radiographic study. Acta Odontol Scand, 43:75-81, 1985. https://doi.org/10.3109/00016358509046490
  11. Park K, Lee D, Kim J, et al. : Timing for removal of mesiodens in relation to the maxillay central incisors. J Korean Acad Pediatr Dent, 43:246-253, 2016.
  12. Dharmani U, Rajput A, Verma M, et al. : Successful autotransplantation of a mature mesiodens to replace a traumatized maxillary central incisor. Int Endod J, 48:619-626, 2015. https://doi.org/10.1111/iej.12347
  13. Lee Y, Chang SW, Kum KY, et al. : Autotransplantation of mesiodens for missing maxillary lateral incisor with conebeam CT-fabricated model and orthodontics. Int Endod J, 47:896-904, 2014. https://doi.org/10.1111/iej.12223
  14. Ephraim R, Dilna NC, Sreedevi S, Shubha M : A labially positioned mesiodens and its repositioning as a missing central incisor. J Int Oral Health, 6:114-117, 2014.
  15. Wang LJ, Tang R, Nancollas GH, et al. : Enamel demineralization in primary and permanent teeth. J Dent Res, 85:359-363, 2006. https://doi.org/10.1177/154405910608500415
  16. Lucchese A, Storti E : Morphological characteristics of primary enamel surfaces versus permanent enamel surfaces: SEM digital analysis. Eur J Paediatr Dent, 12:179-183, 2011.
  17. Ronald S, Jack F, John P : Craig's Restorative Dental Material, 14th ed. Mosby, 277-278, 2018.
  18. LeGeros RZ, Piliero JA, Pentel L : Comparative properties of deciduous and permanent (young and old) human enamel. Gerotondology, 2:1-8, 1983. https://doi.org/10.1111/j.1741-2358.1983.tb00341.x
  19. Demirjian A, Goldstein H, Tanner JM : A new system of dental age assessment. Hum Biol, 45:211-227, 1973.
  20. Shin YS, Kim JB, Kim JS : Relationship with passage time of human dental pulp stem cells from supernumerary tooth by classification. J Korean Acad Pediatr Dent, 43:419-426, 2016.
  21. Agostini FG, Kaaden C, Powers JM : Bond strength of selfetching primers to enamel and dentin of primary teeth. Pediatr Dent, 23:481-486, 2001.
  22. Tedesco TK, Soares FZ, Rocha Rde O, et al. : Effect of cariogenic challenge on bond strength of adhesive systems to sound and demineralized primary and permanent enamel. J Adhes Dent, 16:421-428, 2014. https://doi.org/10.3290/j.jad.a32662
  23. Salama FS, Tao L : Comparison of Gluma bond strength to primary vs. permanent teeth. Pediatr Dent, 13:163-166, 1991.
  24. Vilhjalmsson VH, Knudsen GC, Grung B, Bardsen A : Dental auto-transplantation to anterior maxillary sites. Dent Traumatol, 27:23-29, 2011. https://doi.org/10.1111/j.1600-9657.2010.00952.x
  25. Kim SK, Baik BJ, Kim JG, Yang YM : Autotransplantation of impacted maxillary canines. J Korean Acad Pediatr Dent, 34:481-489, 2007.
  26. Penny RE, Kraal JH : Crown-to-root ratio: its significance in restorative dentistry. J Prosthet Dent, 42:34-38, 1979. https://doi.org/10.1016/0022-3913(79)90327-5
  27. The Korean Academy of Conservative Dentistry : Operative Dentistry, 3rd ed. Shinhung INC., Seoul, 12-17, 2010.
  28. Marquezan M, da Silveria BL, Kramer PF, et al. : Microtensile bond strength of contemporary adhesives to primary enamel and dentin. J Clin Pediatr Dent, 32:127-132, 2008.
  29. Wang LJ, Tang R, Nancollas GH, et al. : Enamel demineralization in primary and permanent teeth. J Dent Res, 85:359-363, 2006. https://doi.org/10.1177/154405910608500415
  30. Christopher A, Krishnakumar R, Reddy NV, Rohini G : Effect of enamel deproteinization in primary teeth. J Clin Pediatr Dent, 42:45-49, 2018. https://doi.org/10.17796/1053-4628-42.1.8
  31. De Menezes Oliveira MA, Torres CP, Borsatto MC, et al. : Microstructure and mineral composition of dental enamel of permanent and deciduous teeth. Microsc Res Tech, 73:572-577, 2010. https://doi.org/10.1002/jemt.20796
  32. Sabel N : Enamel of Primary Teeth - morphological and chemical aspects. Swed Dent J Suppl, 222:1-77, 2012.
  33. Davette JH, Brett C, Gray F, et al. : Wear of Primary Tooth Enamel by Ceramic Materials. Pediatr Dent, 38:519-522, 2016.
  34. Poorni S, Kumar RA, Ramachandran S, et al. : Effect of 10% sodium ascorbate on the calcium: Phosphorus ratio of enamel bleached with 35% hydrogen peroxide: an in vitro quantitative energy-dispersive X-ray analysis. Contemp Clin Dent, 1:223-226, 2010. https://doi.org/10.4103/0976-237X.76388
  35. Das B, Muthu MS, Farzan JM : Comparison of the chemical composition of normal enamel from exfoliated primary teeth and teeth affected with early childhood caries: an in vitro study. Int J Paediatr Dent, 26:20-25, 2016. https://doi.org/10.1111/ipd.12153
  36. Muhamad A, Moti M, Ornit C, Uri Z : Histological and chemical analyses of mesiodens development and mineralization. Arch Oral Biol, 87:191-195, 2018. https://doi.org/10.1016/j.archoralbio.2017.12.020
  37. Sasaki T, Debari K, Garant PR : Ameloblast modulation and changes in the Ca, P, and S content of developing enamel matrix as revealed by SEM-EDX. J Dent Res, 66:778-783, 1987. https://doi.org/10.1177/00220345870660031501
  38. Kodaka T, Debari K, Yamada M, Kuroiwa M : Correlation between microhardness and mineral content in sound human enamel (short communication). Caries Res, 26:139-141, 1992. https://doi.org/10.1159/000261498
  39. Tanaskovic-Stankovic S, Tanaskovic I, Milosavljevic Z, et al. : The mineral content of the hard dental tissue of mesiodens. Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub, 162:149-153, 2018. https://doi.org/10.5507/bp.2018.017
  40. Gutierrez-Salazar MP, Reyes-Gasga J : Microhardness and chemical composition of human tooth. Mat Res, 6:367-373, 2003. https://doi.org/10.1590/S1516-14392003000300011
  41. Taube F, Marczewski M, Noren JG : Deviations of inorganic and organic carbon content in hypomineralised enamel. J Dent, 43:269-278, 2015. https://doi.org/10.1016/j.jdent.2014.09.003
  42. Jalevik B, Noren JG : Enamel hypomineralization of permanent first molars: a morphological study and survey of possible aetiological factors. Int J Paediatr Dent, 10:278-289, 2000. https://doi.org/10.1046/j.1365-263x.2000.00210.x
  43. Crombie FA, Manton DJ, Reynolds EC, et al. : Characterisation of developmentally hypomineralised human enamel. J Dent, 41:611-618, 2013. https://doi.org/10.1016/j.jdent.2013.05.002