Acta Scientific Dental Sciences (ISSN: 2581-4893)

Research Article Volume 4 Issue 3

A Multi-Ethnic Study to Determine the Prevalence of Bony Exostoses Among Residents in Abuja, North Central Nigeria

Seidu A Bello1,2*, Nathan U Ikimi2, Olayinka Falola1 and Adeoye John Ademola1

1Oral and Maxillofacial Surgery Department, State House Clinic, ASO Rock, Abuja Nigeria, West Africa
2Cleft and Facial Deformity Foundation (CFDF), Gwarinpa Abuja, Nigeria, West Africa

*Corresponding Author: Seidu A Bello, Oral and Maxillofacial Surgery Department, State House Clinic, ASO Rock and Cleft and Facial Deformity Foundation (CFDF), Gwarinpa Abuja, Nigeria, West Africa.

Received: February 04, 2020; Published: February 26, 2020



 ' Bony exostoses are non-pathological, asymptomatic bony outgrowths in various parts of the upper and lower jaw within the oral cavity. They are differentiated mainly into two groups: torus mandibularis when found on the mandible and torus palatinus when found on the palate; however significant as they can interfere with the retention of dental prostheses, lead to obstructive sleep apnea, limit tongue movements or be used as a source of autogenous bone graft in Implant Dentistry.

 ' This is a descriptive, cross-sectional epidemiological study carried out among 938 subjects in a multi-ethnic setting, within 12 - 90years of age, 37.58 ± 13.3 (Mean ± SD), aimed to determine the prevalence of these bony outgrowth. Ethical clearance was obtained from the medical ethics and research committee of the federal capital territory, data collection tool was a pre-tested self-administered questionnaires and analysis was done with Statistical package for social science (SPSS) version 22. Frequency distribution tables were obtained, and chi-square test and students’ t-test were used to compare differences between the various groups present. Statistical significance was set at p < 0.05.

 ' A prevalence rate of 15.9% for torus palatinus and 19.3% for torus mandibularis was recorded in this study with torus palatinus being more present in females 20.5% than male 9.6% and this was statistically significant. Also, of statistically significant was torus palatinus for age-group 20 - 29 years of age and torus mandibularis in equally proportion for age- group 30-39years of age at 22.8% and 40 - 49years of age at 22.8%. There were no statistically significant relations recorded for torus palatinus or torus mandibularis with the ethnic origin of subjects present in this study.

 ' There are reported studies in Nigeria where statistically significant relationship was established between ethnicity and bony exostosis; however, no such relationship was reported in our multi-ethnic study.

Keywords: Torus Palatinus; Torus Mandibularis; North-Central Nigeria



  1. Garcia-Garcia AS., et al. “Current status of the torus palatinus and torus mandibularis”. Medicine Oral 15 (2010): 353-360.
  2. Chi AC., et al. “Oral and maxillofacial pathology”. Elsevier Health Sciences (2008).
  3. Leyla BC., et al. “Is There an Association between Torus Mandibularis and Bite Force?” Hacettepe Diþhekimliði Fakültesi Dergisi Cilt 29.4 (2005): 15-17.
  4. Yoshinaka M., et al. “Prevalence of torus mandibularis among a group of elderly Japanese and its relationship with occlusal force”. Gerodontology 31 (2014): 117-122.
  5. Johnson CC., et al. “Torus mandibularis: a genetic study”. American Journal of Human Genetics 17 (1965): 433-442.
  6. Reichart PA., et al. “Prevalence of torus palatinus and torus mandibularis in Germans and Thai”. Community Dentistry and Oral Epidemiology 16 (1988): 61-64.
  7. Sirirungrojying S and Kerdpon D. “Relationship between oral tori and temporomandibular disorders”. International Dental Journal 49 (1999): 101-104.
  8. Sasaki H., et al. “Pronounced palatal and mandibular tori observed in a patient with chronic phenytoin therapy: a case report”. Journal of Periodontology 70 (1999): 445-448.
  9. Al-Bayaty HF., et al. “An epidemiological study of tori among 667 dental outpatients in Trinidad and Tobago, West Indies”. International Dental Journal 51 (2001): 300-304.
  10. Auskalnis A., et al. “Oral bony outgrowths: Prevalence and genetic factor influence. Study of twins”. Medicina 51 (2015): 228-232.
  11. Mirza D., et al. “Frequency of torus palatinus; a study done in a teaching hospital in Karachi”. Pakistan Oral and Dental Journal 33.1 (2013): 58-62.
  12. Verweij KE., et al. “Multiple lesions in upper jaw”. The Netherlands Journal of Medicine 69 (2011): 347-350.
  13. Sonnier KE., et al. “Palatal tubercles, palatal tori, and mandibular tori: prevalence and anatomical features in a US population”. Journal of Periodontology 70 (1999): 329-336.
  14. Shimahara T., et al. “Mandibular torus with tongue movement disorder: a case report”. Bulletin of the Osaka Medical College 53 (2007): 143-146.
  15. Saffran AJ and Clark RF. “Torus mandibularis: an unusual cause of obstructive sleep apnea”. Journal of Ear Nose and Throat 83 (2004): 324.
  16. Pechekina EA and Benfer RA Jr. “The role of occlusal stress and gingival infection in the formation of exostoses on mandible and maxilla from Neolithic China”. Homo 53 (2002): 112-130.
  17. Yildiz E., et al. “Prevalence of torus palatinus in Turkish school children”. Surgical and Radiologic Anatomy 27 (2005): 368-371.
  18. Maduakor SN and Nwoga MC. “Prevalence of mandibular and palatine tori among the Ibos in Enugu, South-East Nigeria”. Nigerian Journal of Clinical Practice 20 (2017): 57-60.
  19. Dosumu OO., et al. “The prevalence of palatine and mandibular tori in a Nigerian Population”. Odontostomatologie Tropicale 28 (1998):  6-8.
  20. Adeyemo WL., et al. “Prevalence and pattern of presentation of mandibular and palatine tori in a Nigerian population”. Nigerian Dental Journal 17 (2010): 16-18.
  21. Agbaje JO., et al. “Torus palatinus and torus mandibularis in a Nigerian population”. African Journal of Oral Health 2 (2005): 30-36.
  22. Yaacob H., et al. “The Prevalence of Oral Tori in Malaysians”. Journal of Oral Medicine 38 (1983): 40-42.
  23. Gorsky M., et al. “Prevalence of torus palatinus in a population of young and adult Israelis”. Archives of Oral Biology 41 (1996): 623-625.
  24. Kolas S., et al. “The occurrence of torus palatine and torus mandibularis in 2478 dental patients”. Oral Surgery, Oral Medicine, Oral Pathology, and Oral Radiology 6 (1953): 1134-1141. 
  25. Eggen S., et al. “Variation in torus palatinus prevalence in Norway”. Scandinavian Journal of Dental Research 102 (1994): 54-59. 
  26. Jainkittivong A., et al. “Prevalence and clinical characteristics of oral tori in 1,520 Chulalongkorn University Dental School patients”. Surgical and Radiologic Anatomy 29 (2007): 125-131. 
  27. Tran KT and Shannon M. “Images in clinical medicine. Torus palatinus”. The New England Journal of Medicine 356 (2007): 1759. 
  28. Hamasha AA., et al. “Gender-specific oral health beliefs and behaviors among adult patients attending King Abdulaziz Medical City in Riyadh”. The Saudi Dental Journal 30.3 (2018): 226-231.


Citation: Seidu A Bello., et al. “A Multi-Ethnic Study to Determine the Prevalence of Bony Exostoses Among Residents in Abuja, North Central Nigeria”. Acta Scientific Dental Sciences 4.3 (2020): 93-98.


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