Epidemiology of Orofacial Clefts: A Spatio-Temporal Descriptive Analysis in Tripoli, Libya, 2017-2021

Abstract

Orofacial clefts are the most common congenital anomalies affecting the orofacial region. An abnormal facial development causes this congenital deformity during gestation; its aetiology is multifactorial. It is crucial to understand the prevalence of craniofacial anomalies in each community to determine the size of the problem, enhance the life standards for the patients, and assess the efficacy of interventions. In this study, we aimed to provide a picture of the prevalence of orofacial clefts in Tripoli, Libya. Also, it provides a useful reference for cleft-type distribution with their etiological risk factors. The data was collected from the archives of cleft babies referred to major specialized hospitals in Tripoli, Libya, from 2017 to 2021. Variables were collected and analyzed, including data related to cleft cases and their parents. During the study period, the incidence of orofacial clefts was 1.06 per 1,000 live births. The prevalence of cleft lip was 38.3%, cleft palate was 42.2%, and cleft lip with palate was 19.6%. The results showed that 2017 had the highest incidence rate, reaching 32.2%, while it was 8.3% in 2021. The prevalence was generally higher among males than females, at a difference rate of 3.47%. A history of folic acid deficiency and unsupervised drug intake during pregnancy was noted (58.3% and 61.7%, respectively). In addition, the higher prevalence was more common among mothers older than 34. Moreover, it has observed that 46.8% of patients` fathers were smokers. The study concluded that the incidence of cleft defects in Tripoli, Libya, was relatively low, and the role of the predisposing factors in increasing the incidence of cleft deformity remains uncertain. Further studies are recommended to find out the root cause.