Fusion of a Supernumerary Tooth to Right Mandibular Second Molar: a Case Report and Literature Review

Overview

Journal Int J Clin Exp Med

Specialty General Medicine

Date 2015 Nov 10

PMID 26550101

Citations 9

Authors

Min Zhu

Chao Liu

Shuangshuang Ren

Zintong Lin

Leiying Miao

Weibin Sun

Affiliations

Soon will be listed here.

Abstract

Gemination or fusion is a rare occurrence in the mandibular posterior teeth. The aim of this article is to describe the problems encountered and the strategy employed in treating such cases. A 34 years old patient came with the complaint of spontaneous and radiating pain in the right mandibular posterior region. The tooth in concern was an anomalous 'double' second mandibular molar diagnosed as having necrotic pulp with chronic apical abscess of endodontic origin. The present case emphasizes the importance of identifying anatomical anomalies during treatment of fused teeth with supernumerary tooth, and the need for the use of advanced imaging modalities like CBCT which is a critical aid in the diagnosis of such cases. Fused teeth can be managed quite efficiently by an overall combined treatment including both endodontic and periodontal therapy.

Citing Articles

Multidisciplinary Oral Rehabilitation in a Patient With Dental Anomaly: A Case Report With 18-Month Follow-Up.

Figueiredo R, Carneiro T, Tavares N, Caixeta A, Soares M, Soares P Case Rep Dent. 2025; 2025:5565892.

PMID: 40040793 PMC: 11876538. DOI: 10.1155/2025/5565892.

An asymptomatic ectopic impacted tooth in the mandibular ramus region with congenital loss of the second lower right premolar: A rare case report.

Xu S, Ji M, Xu C, Xu J Medicine (Baltimore). 2025; 104(6):e41367.

PMID: 39928818 PMC: 11813051. DOI: 10.1097/MD.0000000000041367.

Rare case of gemination and fusion involving supernumerary teeth and second mandibular molar - Case report.

Palma V, Leite J, Rocha L, Bueno M, Canavarros T, Volpato L J Clin Exp Dent. 2024; 16(2):e236-e239.

PMID: 38496816 PMC: 10943687. DOI: 10.4317/jced.60865.

Management options and long-term follow-ups for permanent double incisors: six to eleven-year case reports.

Sen Yavuz B, Sezgin B, Pekel B, Korkut B, Mentes A BMC Oral Health. 2024; 24(1):225.

PMID: 38350932 PMC: 10863289. DOI: 10.1186/s12903-024-04000-7.

Fusion of a maxillary third molar with a supernumerary fourth molar: A case report.

Apessos I, Memis I, Mikrogeorgis G, Delantoni A, Dionysopoulos D, Lillis T Clin Case Rep. 2024; 12(2):e8484.

PMID: 38328490 PMC: 10847388. DOI: 10.1002/ccr3.8484.

References

Marechaux S . The treatment of fusion of a maxillary central incisor and a supernumerary: report of a case. ASDC J Dent Child. 1984; 51(3):196-9. View

Karacay S, Guven G, Koymen R . Management of a fused central incisor in association with a macrodont lateral incisor: a case report. Pediatr Dent. 2006; 28(4):336-40. View

Cetinbas T, Halil S, Akcam M, Sari S, Cetiner S . Hemisection of a fused tooth. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2007; 104(4):e120-4. DOI: 10.1016/j.tripleo.2007.03.029. View

Ozden B, Gunduz K, Ozer S, Oz A, Otan Ozden F . The multidisciplinary management of a fused maxillary central incisor with a talon cusp. Aust Dent J. 2012; 57(1):98-102. DOI: 10.1111/j.1834-7819.2011.01637.x. View

Hulsmann M, Bahr R, Grohmann U . Hemisection and vital treatment of a fused tooth--literature review and case report. Endod Dent Traumatol. 1998; 13(6):253-8. DOI: 10.1111/j.1600-9657.1997.tb00051.x. View

Hernandez-Guisado J, Torres-Lagares D, Infante-Cossio P, Gutierrez-Perez J . Dental gemination: report of case. Med Oral. 2002; 7(3):231-6. View

Mader C . Fusion of teeth. J Am Dent Assoc. 1979; 98(1):62-4. DOI: 10.14219/jada.archive.1979.0037. View

Tsesis I, Steinbock N, Rosenberg E, Kaufman A . Endodontic treatment of developmental anomalies in posterior teeth: treatment of geminated/fused teeth--report of two cases. Int Endod J. 2003; 36(5):372-9. DOI: 10.1046/j.1365-2591.2003.00666.x. View

Song C, Chang H, Min K . Endodontic management of supernumerary tooth fused with maxillary first molar by using cone-beam computed tomography. J Endod. 2010; 36(11):1901-4. DOI: 10.1016/j.joen.2010.08.026. View

10.

Gadimli C, Sari Z . Interdisciplinary treatment of a fused lower premolar with supernumerary tooth. Eur J Dent. 2011; 5(3):349-53. PMC: 3137452. View

11.

Nunes E, de Moraes I, de Novaes P, Sousa S . Bilateral fusion of mandibular second molars with supernumerary teeth: case report. Braz Dent J. 2002; 13(2):137-41. DOI: 10.1590/s0103-64402002000200012. View

12.

Yusof W . Non-syndrome multiple supernumerary teeth: literature review. J Can Dent Assoc. 1990; 56(2):147-9. View

13.

Rudagi K, Rudagi B, Metgud S, Wagle R . Endodontic management of mandibular second molar fused to a supernumerary tooth, using spiral computed tomography as a diagnostic aid: a case report. Case Rep Dent. 2012; 2012:614129. PMC: 3415096. DOI: 10.1155/2012/614129. View

14.

de Siqueira V, Braga T, Martins M, Raitz R, Martins M . Dental fusion and dens evaginatus in the permanent dentition: literature review and clinical case report with conservative treatment. J Dent Child (Chic). 2004; 71(1):69-72. View

15.

Matherne R, Angelopoulos C, Kulild J, Tira D . Use of cone-beam computed tomography to identify root canal systems in vitro. J Endod. 2007; 34(1):87-9. DOI: 10.1016/j.joen.2007.10.016. View

16.

Tachibana H, Matsumoto K . Applicability of X-ray computerized tomography in endodontics. Endod Dent Traumatol. 1990; 6(1):16-20. DOI: 10.1111/j.1600-9657.1990.tb00381.x. View

17.

Rajab L, Hamdan M . Supernumerary teeth: review of the literature and a survey of 152 cases. Int J Paediatr Dent. 2002; 12(4):244-54. DOI: 10.1046/j.1365-263x.2002.00366.x. View

18.

Duncan W, Helpin M . Bilateral fusion and gemination: a literature analysis and case report. Oral Surg Oral Med Oral Pathol. 1987; 64(1):82-7. DOI: 10.1016/0030-4220(87)90121-6. View

19.

Simratvir M, Prabhakar M . Clinical management of a unique case of fusion between supernumerary canine and maxillary first premolar. J Calif Dent Assoc. 2012; 39(12):885-9. View

20.

Brook A . Dental anomalies of number, form and size: their prevalence in British schoolchildren. J Int Assoc Dent Child. 1974; 5(2):37-53. View