A Rare Unusual Case of Non-Syndromic Mandibular Concomitant Hypo-Hyperdontia

Akash Bhatnagar; Aatya Takuli

doi:10.21276/ujds.2025.v11.i2.11

Akash Bhatnagar Teerthanker Mahaveer Dental College and Research Centre, Teerthanker Mahaveer University, Moradabad, Uttar Pradesh, India.
Aatya Takuli Teerthanker Mahaveer Dental College and Research Centre, Teerthanker Mahaveer University, Moradabad, Uttar Pradesh, India. https://orcid.org/0009-0000-6286-5833

DOI: https://doi.org/10.21276/ujds.2025.v11.i2.11

Keywords: Dental anomalies, Tooth agenesis, Supernumerary teeth, Concomitant hypo-hyperdontia

Abstract

The abnormalities in the size, number, shape or structure of the teeth are termed as dental anomalies. Tooth agenesis is the congenital absence of a tooth which leads to the developmental arrest of the corresponding tooth germ. Supernumerary teeth are the teeth that develop in addition to the regular number of teeth in the dentition, including odontoma. Concomitant hypo-hyperdontia (CHH) is an unusual condition. Its occurrence in the mandibular arch makes it very uncommon and rare. Herein, we present a case of extremely peculiar case of CHH in mandibular arch. There was missing 71, instead a conical shaped supernumerary tooth with no underlying permanent tooth bud was present. 81 was retained with no underlying permanent tooth bud. This was suggestive of agenesis of 31 and 41. Also, there was missing 75, which was indicative of agenesis of 75.

References

1) Han Zhang H, Gong X, Xu X, Wang X, Sun Y. Tooth number abnormality: from bench to bedside. Int J Oral Sci2023;15:5.
2) Anegundi RT, Tegginmani VS, Battepati P, Tavargeri A, Patil S, Trasad V. Prevalence and characteristics of supernumerary teeth in a non-syndromic South Indian pediatric population. J Indian SocPedodPrev Dent2014;32:9-12.
3) Henninger E, Friedli L, Makrygiannakis M, Zymperdikas VF, Papadopoulos MA, Kanavakis G. Supernumerary Tooth Patterns in Non-Syndromic White European Subjects. Dent J2023;11(230).
4) Suljkanovic N, DzenanBalic D, Begic N. Supernumerary and Supplementary Teeth in a Non-syndromic Patients. Med Arch2021;75(1):78-81.
5) Cheng FC, Chen MH, Liu BL, Liu SY, Hu TY, Chang JF. Nonsyndromic supernumerary teeth in patients in National Taiwan University Children’s hospital. J Dental Sci2022;1612-1618.
6) Gupta S, Popat H. A Clinical Report of Nonsyndromic Concomitant Hypo-Hyperdontia. Case Reports in Dentistry2013.
7) Chen Y, Mallineni SK. Distribution of hypodontia and hyperdontia in concomitant hypo-hyperdontia patients: Critical appraisal of the published data. Eur J Gen Dent2017;6:65-8.
8) Das G, Sarkar S, Bhattacharya B, Saha N. Coexistent partial anodontia and supernumerary tooth in the mandibular arch: A rare case. J Indian SocPedodPrev Dent 2006;24(1):33 4.
9) Nayak AG, Chhaparwal Y, Pai KM, Lele AS. Non syndromic hypo hyperdontia of the permanent dentition with involvement of the mandibular anterior region: a rare occurrence. Rev ClínPesqOdontol 2010;6:281 4.
10) Venkataraghavan K, Muralikrishnan B, Anantharaj A. Mandibular mesiodens with agenesis of central incisors (Hypohyperdontia): A case report and review. Int J Contemp Dent 2011;2:26 30.
11) Verma KG, Verma P, Rishi S. Case report: A rare occurrence of non syndromic hypo hyperdontia in the mandibular anterior region. Eur Arch Paediatr Dent 2012;13:47 9.
12) Nirmala SV, Sandeep C, SivakumarNuvvula S, Mallineni SK. Mandibular hypo hyperdontia: A report of three cases. J of Int Society of Prev Community Dent
13) Muttineni N, Manasa N, Turimella S, Badipati RB, Lalitha G. Oligopleiodontia of the mandibular anterior segment: A case report and surgical management of its esthetic treatment needs. Int J Health Sci 2022;6(S1):5121–5126.
14) Marya CM, Sharma G, Parashar VP, Dahiya V, Gupta A. Mandibular midline supernumerary tooth associated with agenesis of permanent central incisors: A diagnostic conundrum. Stomatologija, Baltic Dental Maxillofacial J2011;14:65-8.
15) Tamrakar AK, Rathee M. A Rare Occurrence of Non-Syndromic Hypo-Hyperdontia in the Mandibular Anterior. J Clin Diagnostic Research. 2014;8(8).