Concrescence is an uncommon developmental condition of teeth where the cementum overlying the roots of at least two teeth fuse together without the involvement of dentin.[1][2] Usually, two teeth are involved with the upper second and third molars being most commonly fused together.[3] The prevalence ranges 0.04–0.8% in permanent teeth, with the incidence being highest in the posterior maxilla.[4][2][1]
^ abRomito, Laura M. (March 2004). "Concrescence: report of a rare case". Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology. 97 (3): 325–327. doi:10.1016/j.tripleo.2003.10.015.
^Gunduz, K; Sumer, M; Sumer, A P; Gunhan, O (2006). "Concrescence of a mandibular third molar and a supernumerary fourth molar: Report of a rare case". British Dental Journal. 200 (3): 141–2. doi:10.1038/sj.bdj.4813191. PMID16474352. S2CID20376985.