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Variations in the Number of Teeth

  • Tsuyoshi Tanaka
Chapter
First Online:

Abstract

There are two main congenital anomalies of human tooth number: hyperdontia and congenitally missing teeth. Hyperdontia is the condition of having more teeth than the normal set (28, excluding third molars); congenitally missing teeth means fewer teeth than normal. Both conditions can appear as isolated traits or associated with syndromes such as ectodermal dysplasia. Tooth number variations can have negative aesthetic and functional effects such as malocclusion, periodontal injury, impaired alveolar bone growth, reduced chewing efficiency, and speaking problems. Patients who have tooth number irregularities need more dental attention, so these conditions are interesting not only for dentists but also for public health departments and health insurance companies.

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References

  1. Acharya PN, Jones SP, Moles D et al (2010) A cephalometric study to investigate the skeletal relationships in patients with increasing severity of hypodontia. Angle Orthod 80:699–706CrossRefGoogle Scholar
  2. Acıkgoz A, Acıkgoz G, Tunga U et al (2006) Characteristics and prevalence of non-syndrome multiple supernumerary teeth: a retrospective study. Dentomaxillofac Radiol 35:185–190CrossRefGoogle Scholar
  3. Alappat S, Zhang ZY, Chen YP (2003) MSX homeobox gene family and craniofacial development. Cell Res 13:429–442CrossRefGoogle Scholar
  4. Bailit HL (1975) Dental variation among populations. An anthropologic view. Dent Clin N Am 19:125–139PubMedGoogle Scholar
  5. Bailleul-Forestier I, Molla M, Verloes A et al (2008) The genetic basis of inherited anomalies of the teeth. Part 1: clinical and molecular aspects of non-syndromic dental disorders. Eur J Med Genet 51:273–291CrossRefGoogle Scholar
  6. Brook AH (1984) A unifying aetiological explanation for anomalies of human tooth number and size. Arch Oral Biol 29:373–378CrossRefGoogle Scholar
  7. Cadena H, Combelles R, Fabert G et al (1977) Mesiodens and heredity (Mesiodens et heredite). Rev Stomatol Chir Maxillofac 78:341–346Google Scholar
  8. Chung LK, Hobson RS, Nunn JH et al (2000) An analysis of the skeletal relationships in a group of young people with hypodontia. J Orthod 27:315–318CrossRefGoogle Scholar
  9. Dahlberg AA (1945) The changing dentition of man. J Am Dent Assoc 32:676–690CrossRefGoogle Scholar
  10. Daugaard-Jensen J, Nodal M, Skovgaard LT et al (1997) Comparison of the pattern of agenesis in the primary and permanent dentitions in a population characterized by agenesis in the primary dentition. Int J Paediatr Dent 7:143–148CrossRefGoogle Scholar
  11. Dhamo B, Vucic S, Kuijpers MA et al (2015) The association between hypodontia and dental development. Clin Oral Investig 20:1347–1354CrossRefGoogle Scholar
  12. Dhanrajani PJ (2002) Hypodontia DP. Etiology, clinical features, and management. Quintessence Int 33:294–302PubMedGoogle Scholar
  13. Fan XX, Li J, Ge LH et al (2011) Dental anomalies in Chinese children with complete unilateral cleft lip and palate. Zhonghua Kou Qiang Yi Xue Za Zhi 46:263–266PubMedGoogle Scholar
  14. Garvey MT, Barry HJ, Blake M (1999) Supernumerary teeth – an overview of classification, diagnosis and management. J Can Dent Assoc 65:612–616PubMedGoogle Scholar
  15. De Oliveira Gomes C, Drummond SN, Jham BC et al (2008) A survey of 460 supernumerary teeth in Brazilian children and adolescents. Int J Paediatr Dent 18:98–106CrossRefGoogle Scholar
  16. Haselden K, Hobkirk JA, Goodman JR et al (2008) Root resorption in retained deciduous canine and molar teeth without permanent successors in patients with severe hypodontia. Int J Paediatr Dent 11:171–178CrossRefGoogle Scholar
  17. Henry RJ, Post AC (1989) A labially positioned mesiodens: case report. Pediatr Dent 11:59–63PubMedGoogle Scholar
  18. Hobkirk JA, Gill DS, Jones SP et al (2011) Hypodontia a team approach to management. Wiley-Blackwell, HobokenGoogle Scholar
  19. Kara Mİ, Aktan AM, Ay S et al (2012) Characteristics of 351 supernumerary molar teeth in Turkish population. Med Oral Patol Oral Cir Bucal 17:e395–e400CrossRefGoogle Scholar
  20. Khalaf K, Robinson DL, Elcock C et al (2005) Tooth size in patients with supernumerary teeth and a control group measured by image analysis system. Arch Oral Biol 50:243–248CrossRefGoogle Scholar
  21. Kumar SK, Lakshmi AV, Namita S et al (2013) Craniofacial morphologic variations and its association with hypodontia pattern (anterior) in South Indian female population. Biosci Biotechnol Res Asia 10:325–328CrossRefGoogle Scholar
  22. Mahabob MN, Anbuselvan GJ, Kumar BS et al (2012) Prevalence rate of supernumerary teeth among non-syndromic south Indian population: an analysis. J Pharm Bioallied Sci 4:373CrossRefGoogle Scholar
  23. Mattheeuws N (2004) Has hypodontia increased in caucasians during the 20th century? A meta-analysis. Eur J Orthod 26:99–103CrossRefGoogle Scholar
  24. Nik-Hussein NN, Abdul Majid Z (1996) Dental anomalies in the primary dentition: distribution and correlation with the permanent dentition. J Clin Pediatr Dent 21:15–19PubMedGoogle Scholar
  25. Nunn JH, Carter NE, Gillgrass TJ et al (2003) The interdisciplinary management of hypodontia: background and role of paediatric dentistry. Br Dent J 194:245–251CrossRefGoogle Scholar
  26. Polder BJ, Van’t Hof MA, Van der Linden FP et al (2004) A meta-analysis of the prevalence of dental agenesis of permanent teeth. Community Dent Oral Epidemiol 32:217–226CrossRefGoogle Scholar
  27. Primosch RE (1981) Anterior supernumerary teeth – assessment and surgical intervention in children. Pediatr Dent 3:204–215PubMedGoogle Scholar
  28. Rajab LD, Hamdan MAM (2002) Supernumerary teeth: review of the literature and a survey of 152 cases. Int J Paediatr Dent 12:244–254CrossRefGoogle Scholar
  29. Sadaqah NR, Tair JA (2015) Management of patient with hypodontia: review of literature and case report. Open J Stomatol 5:293–308CrossRefGoogle Scholar
  30. Satokata I, Maas R (1994) Msx1 deficient mice exhibit cleft palate and abnormalities of craniofacial and tooth development. Nat Genet 6:348–356CrossRefGoogle Scholar
  31. Suginami A (2007) Poster 227: rudiment incisors survive and erupt as supernumerary teeth as a result of USAG-1 abrogation. J Oral Maxillofac Surg 65:43.e126CrossRefGoogle Scholar
  32. Tay F, Pang A, Yuen S (1984) Unerupted maxillary anterior supernumerary teeth: report of 204 cases. ASDC J Dent Child 51:289–294PubMedGoogle Scholar
  33. Taylor GS (1972) Characteristics of supernumerary teeth in the primary and permanent dentition. Dent Pract Dent Rec 22:203–208PubMedGoogle Scholar
  34. van den Boogaard MJ, Dorland M, Beemer FA et al (2000) Erratum to MSX1 mutation is associated with orofacial clefting and tooth agenesis in humans. Nat Genet 25:342–343CrossRefGoogle Scholar
  35. Whittington BR, Durward CS (1996) Survey of anomalies in primary teeth and their correlation with the permanent dentition. N Z Dent J 92:4–8PubMedGoogle Scholar

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© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Tsuyoshi Tanaka
    • 1
  1. 1.University of FloridaGainesvilleUSA

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