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Bulletin of the International Association for Paleodontology, Vol. 15 No. 1, 2021.

Original scientific paper

Dental twinning in the primary dentition: new archaeological cases from Italy

Alessandra Sperduti orcid id orcid.org/0000-0001-9338-5891 ; Servizio di Antropologia, Museo delle Civiltà, Piazza Guglielmo Marconi 8/10, 00144, Rome, Italy
Luciano Fattore
Massimo Botto
Claudio Cavazzuti orcid id orcid.org/0000-0001-7911-194X
Luigi Cicala orcid id orcid.org/0000-0002-8570-3500
Elisabetta Garau
Stella Interlando orcid id orcid.org/0000-0002-1432-5119
Elizabeth Fentress
Francesca Candilio orcid id orcid.org/0000-0002-4668-1361

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Abstract

Dental twinning (or “double teeth”) is a rare developmental condition that implies the fusion of two or more adjacent teeth. Clinical literature reports individual cases and extensive population studies to clarify causation, distribution, heritability and differential diagnosis of the different types of dental twinning (i.e. fusion, gemination, and accretion) whereas, documentation for past populations is still scarce. Aims: the present study documents four new archaeological cases of dental twinning of deciduous teeth from four different Italian archeological sites and positions them within the framework of the known literature.Materials and methods: the observed cases include five deciduous teeth from four subadults from Sardinia (Monte Sirai, 7th-4th cent. BCE and Santa Filitica, 7th cent. CE), Campania (Velia, 1st-2nd cent. CE) and Latium (Villamagna, 13th-15th cent. CE). The identification, descriptions and differential diagnoses of the anomalies were performed with the use of morphological analyses and, in one case, radiographic means.Results: all cases fall within the category of double teeth; each involving a different set of processes (gemination and dental fusion), teeth (deciduous central incisors, lateral incisors and canines), locations (upper and lower) and occurrence (unilateral and bilateral). Conclusion: to this day, cases reported in literature of dental twinning in archaeological samples are sparse and limited to specific geographical areas. This study adds four more cases from Italy suggesting such anomalies should be recorded in dental analyses in order to, one day, obtain a more reliable modelling of the frequencies and distributions in past populations.

Keywords

dental anomalies; double teeth; primary dentition; bioarchaeology; Italy

Hrčak ID:

259376

URI

https://hrcak.srce.hr/259376

Publication date:

25.6.2021.

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