The objectives of this study were: To conduct a comprehensive review of the literature on hypo-hypodontia, and To categorize the reported cases based on occurrence. An extensive search of the literature covering the period from January 1966 to January 2014 was conducted using the Embase, Google Scholar, Medline, and PubMed databases. The keywords used in the search strategy were "concomitant", "Genesis", "hypodontia", "hyperdontia", "supernumerary teeth", "syndromes", and "hypo-hyperdontia" in various combinations. The retrieved data were analyzed based on gender, occurrence, and occurrence of both hypodontia and hyperdontia.
Descriptive statistics were carried out using the chi-squared test. For hypo-hyperdontia overall, seven case studies and 40 cases involving 103 patients were reported. Our comprehensive review revealed that hypo-hyperdontia occurs most commonly in males (P <…
