Comparison of First Mandibular Primary Molar Crown Dimensions with Stainless Steel Crowns in a Sample of Iranian Children
Background and aims: Deciduous teeth have the main role in an important part of child development. Attempts to maintain these primary teeth have been lead to introduce many materials and techniques such as stainless steel crowns. Due to variation in tooth anatomy between populations, this study compared the buccolingual (BL) to mesiodistal (MD) ratio in first mandibular primary molars with those of stainless steel crowns (SSCs) in a sample of Iranian population.
Materials and methods: 96 extracted first mandibular primary molarswith no caries, restoration, hypoplasia or other dental anomalies in CEJ region, were selected. The MD and BL dimensions of teeth and available maxillary and mandibular SSCs (3M brand) were measured. All dimensions were measured twice, with digital caliper (Insize, Germany); by two people at two different times . Data were analyzed by one-sample t-test and Mc-Nemar's test using SPSS 21.0 software.
Results: significant differences were seen in both BL and MD dimensions between teeth and both maxillary and mandibular SSCs. (p<0.001) According to McNemar's test, 65.6% of teeth were consistent with mandibular SSCs and 38.5% were consistent with maxillary crowns. 3.1% of teeth did not match any of the crowns and in 7.4% both maxillary and mandibular SSCs are appropriate.
Conclusion: In a comparison of the variances of BL/MD ratio of teeth with SSCs two-thirds of teeth were similar to the mandibular SSCs and in about one-third of cases, maxillary SSCs are appropriate. so, significant difference was seen between teeth size and both maxillary and mandibular crowns.
2.Stewart RE, Barber T, Troutman K, Wei S. Pediatric Dentistry: Scientific foundations and clinical practice: CV Mosby Company; 1982.
3. Wong F, Day S. An investigation of factors influencing the longevity of restorations in primary molars. J Int Assoc Dent Child. 1990 Jul;20(1):11-6.
4. McDonald R, Avery D, Dean J. Dentistry for the child and adolescent. 10th ed. ed. Oxford: Mosby; 2016.
5. Brook A, King N. 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. Pediatric dentistry: a clinical approach: John Wiley & Sons; 2009
7. Koora K, Sriram CH, Muthu MS, Chandrasekhar Rao R, Sivakumar N. Morphological characteristics of primary dentition in children of Chennai and Hyderabad . JISPPD . 2018 November 28(2): 60.
8 .Holan G, Fuks A, Ketlz N. Success rate of formocresol pulpotomy in primary molars restored with stainless steel crown vs amalgam. Pediatr Dent. 2002 February;24(3):212-216.
9 .Eigbobo J, Sote E, Oredugba F. Tooth crown dimensions of primary dentition in the Nigerian population. Acta Stomatol Croat. 2010 December;44(4):269-277.
10.Barbería E, Suárez M, 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 December ;10(4):169-75
11 .Vaughan M, Harris E. 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 November;42(6):339-43.
14. Liu H-H, Dung S-Z, Yang Y-H. Crown diameters of the deciduous teeth of Taiwanese. Kaohsiung J Med Sci. 2000 Jun;16(6):299-307.
15. Santoro M, Ayoub ME, Arthur Pardi V, 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 S, Goyal A. Mesiodistal crown dimensions of the permanent dentition in North Indian children. J Indian Soc Pedod Prev Dent. 2006 December ;24(4):192.
17. Kondoa S, Townsendb GC. Sexual dimorphism in crown units of mandibular deciduous and permanent molars in Australian Aborigines . JCHB. 2004 October; 55 : 53–64.
18.Seow W, Wan A. Research Reports Clinical A Controlled Study of the Morphometric Changes in the Primary Dentition of Pre-term, Very-low-birthweight Children. J Dent Res. 2000 January ;79(1):63-9.
19. Afshar H, Kamali Sabeti A , Shahrabi M. Comparison of Primary Molar Crown Dimensions with Stainless Steel Crowns in a Sample of Iranian Children.JODDD. March 2015; 9(2):86-91.
20. 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.
21. Chao D, Tsai T, Chen T. Clinical evaluation of gingival tissue restored with stainless steel crown. Changgeng Yi Xue Za Zhi. 1992 Dec;15(4):198-203.
22. Croll T, Epstein D, Castaldi C. Marginal adaptation of stainless steel crowns. Pediatr Dent. 2003 May-Jun;25(3):249-52.
23. Attari N, Roberts J. Restoration of primary teeth with crowns: a systematic review of the literature. Eur Arch Paediatr Dent. 2006 Jun;7(2):58-62.
24. Moorrees CF, Thomsen SØ, Jensen E, Yen PK-J. Mesiodistal crown diameters of the deciduous and permanent teeth in individuals. J Dent Res. 1957 Feb;36(1):39-47.
25. 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.
26. Axelsson G, Kirveskari P. Crown size of permanent teeth in Icelanders. ACTA ODONTOL SCAND. 1983 March;41(3):181-6
27. 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.
28. Soxman JA. Stainless steel crown and pulpotomy: procedure and technique for primary molars. Gen Dent. 2000 May-Jun;48(3):294-7.
Copyright (c) 2019 Frontiers in Dentistry
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.