Comparison of Primary Mandibular First Molar Crown Dimensions with Stainless Steel Crowns in a Sample of Iranian Children

  • Mehdi Shahrabi Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran
  • Alireza Heidari Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran
  • Sanaz Kamareh Department of Pediatric Dentistry, Dental School, Shahid Beheshti University of Medical Sciences, Tehran, Iran
Keywords:
Tooth, Deciduous, Tooth Crown, Stainless Steel, Molar

Abstract

Objectives: Attempts to retain primary teeth have led to introduction of materials and techniques for their preservation such as stainless steel crowns (SSCs). Due to variations in tooth anatomy among different populations, this study compared the buccolingual (BL) to mesiodistal (MD) ratio of primary mandibular first molars with that of SSCs in an Iranian population.

Materials and Methods:  This cross sectional study was conducted on 96 primary mandibular first molars with intact cementoenamel junction, which had been extracted for severe caries. The MD and BL dimensions of the teeth and available maxillary and mandibular SSCs (3M) were measured. Two independent examiners measured the dimensions twice at two different time points using a digital caliper. Data were analyzed by one-sample t-test and McNemar's test via SPSS 21.0 software.

Results: Significant differences were observed in both BL and MD dimensions between teeth and both maxillary and mandibular SSCs (P<0.001). According to McNemar's test, the dimensions of 65.6% of teeth matched those of mandibular SSCs while the dimensions of 38.5% matched those of maxillary crowns. Dimensions of 3.1% of the teeth did not match any of the crowns and in 7.4%, both maxillary and mandibular SSCs were appropriate.

Conclusion: Comparing the variances of BL/MD ratio of teeth with SSCs revealed that the dimensions of two-thirds of the teeth matched those of mandibular SSCs, while the maxillary SSCs were appropriate for the remaining one-third. Significant differences were seen between the size of teeth and both maxillary and mandibular crowns.

References

1. Stewart RE, Barber T, Troutman K, Wei S. Pediatric Dentistry: Scientific foundations and clinical practice: CV Mosby Company; 1982. p. 899-907.
2. Wong FS, Day SJ. An investigation of factors influencing the longevity of restorations in primary molars. J Int Assoc Dent Child. 1990 Jul;20(1):11-6.
3. Seraj B, Tosifian M, Ghadimi S, Kharrazifard MJ. Measurement of Deciduous Teeth Size in Selected Sample of Iranian Population. Iran J Ortho. 2015 Jun;10(1):1-5.
4. McDonald R, Avery D, Dean J. Dentistry for the child and adolescent. 10th ed. Oxford: Mosby; 2016. p.185-7.
5. Brook AH, King NM. The role of stainless crowns. Part 1. Properties and techniques. Dent Update. 1982 Jan-Feb;9(1):25-6, 28-30.
6. Koch G, Poulsen S, Espelid I, Haubek D. Pediatric dentistry: a clinical approach. Wiley-Blackwell; 2017. p .137-9.
7. Koora K, Sriram CH, Muthu MS, Chandrasekhar Rao R, Sivakumar N. Morphological characteristics of primary dentition in children of Chennai and Hyderabad. J Indian Soc Pedod Prev Dent. 2010 Apr-Jun;28(2):60-7.
8. Holan G, Fuks AB, Ketlz N. Success rate of formocresol pulpotomy in primary molars restored with stainless steel crown vs amalga. Pediatr Dent. 2002 May-Jun;24(3):212-6.
9. Oredugba FA, Eigbobo JO, Temisanren OT. Tooth crown dimensions in a selected population of Nigerians with Down Syndrome. West Afr J Med. 2014 Apr-Jun;33(2):146-50.
10. Barbería E, Suárez MC, Villalón G, Maroto M, García-Godoy F. Standards for mesiodistal and buccolingual crown size and height of primary molars in a sample of Spanish children. Eur J Paediatr Dent. 2009 Dec;10(4):169-75.
11. Vaughan MD, Harris EF. Deciduous tooth size standards for American blacks. J Tenn Dent Assoc. 1992 Oct;72(4):30-3.
12. Lysell L, Myrberg N. Mesiodistal tooth size in the deciduous and permanent dentitions. Eur J Orthod. 1982 May;4(2):113-22.
13. Axelsson G, Kirveskari P. Crown size of deciduous teeth in Icelanders. Acta Odontol Scand. 1984 Dec;42(6):339-43.
14. Liu HH, Dung SZ, Yang YH. Crown diameters of the deciduous teeth of Taiwanese. Kaohsiung J Med Sci. 2000 Jun;16(6):299-307.
15. Santoro M, Ayoub ME, Pardi VA, Cangialosi TJ. Mesiodistal crown dimensions and tooth size discrepancy of the permanent dentition of Dominican Americans. Angle Orthod. 2000 Aug;70(4):303-7.
16. Singh SP, Goyal A. Mesiodistal crown dimensions of the permanent dentition in North Indian children. J Indian Soc Pedod Prev Dent. 2006 Dec;24(4):192-6.
17. Kondo S, Townsend GC. Sexual dimorphism in crown units of mandibular deciduous and permanent molars in Australian Aborigines. Homo. 2004;55(1-2):53-64.
18. Seow WK, Wan A. A controlled study of the morphometric changes in the primary dentition of pre-term, very-low-birthweight children. J Dent Res. 2000 Jan;79(1):63-9.
19. Nowak AJ, Christensen JR, Mabry TR, Townsend JA, Wells MH. Pediatric dentistry: infancy through adolescence. 6th ed. Philadelphia, PA; 2019. p. 317-20.
20. Afshar H, Kamali Sabeti A, Shahrabi M. Comparison of Primary Molar Crown Dimensions with Stainless Steel Crowns in a Sample of Iranian Children. J Dent Res Dent Clin Dent Prospects. 2015 Spring;9(2):86-91.
21. Einwag J. Effect of entirely preformed stainless steel crowns on periodontal health in primary, mixed dentitions. ASDC J Dent Child. 1984 Sep-Oct;51(5):356-9.
22. Chao DD, Tsai TP, Chen TC. [Clinical evaluation of gingival tissue restored with stainless steel crown].Changgeng Yi Xue Za Zhi. 1992 Dec;15(4):198-203.
23. Croll TP, Epstein DW, Castaldi CR. Marginal adaptation of stainless steel crowns. Pediatr Dent. 2003 May-Jun;25(3):249-52.
24. Attari N, Roberts JF. Restoration of primary teeth with crowns: a systematic review of the literature. Eur Arch Paediatr Dent. 2006 Jun;7(2):58-62; discussion 63.
25. Jensen E, Kai-Jen Yen P, Moorrees CF, Thomsen SO. Mesiodistal crown diameters of the deciduous and permanent teeth in individuals. J Dent Res. 1957 Feb;36(1):39-47.
26. Yuen KK, So LL, Tang EL. Mesiodistal crown diameters of the primary and permanent teeth in southern Chinese--a longitudinal study. Eur J Orthod. 1997 Dec;19(6):721-31.
27. Axelsson G, Kirveskari P. Crown size of permanent teeth in Icelanders. Acta Odontol Scand. 1983 Jun;41(3):181-6.
28. Anderson AA. Dentition and occlusion development in African American children: mesiodistal crown diameters and tooth-size ratios of primary teeth. Pediatr Dent. 2005 Mar-Apr;27(2):121-8.
29. Soxman JA. Soxman JA. Stainless steel crown and pulpotomy: procedure and technique for primary molars. Gen Dent. 2000 May-Jun;48(3):294-7.
Published
2019-05-29
How to Cite
1.
Shahrabi M, Heidari A, Kamareh S. Comparison of Primary Mandibular First Molar Crown Dimensions with Stainless Steel Crowns in a Sample of Iranian Children. Front Dent. 16(4):290-295.
Section
Original Article