Despite being challenging, the restoration of severely damaged nonvital teeth can be the first treatment option for many practicing dentists. This is because of the various potential functional, psychological, and financial merits of retaining/restoring a tooth versus tooth extraction and prosthetic replacement [1]. Commonly, restoration of endodontically treated teeth (ETT) involves posts and cores and crown restorations of varying designs, materials, and cements/ luting agents [2]. However, when a decision is made to restore an ETT, the long-term prognosis of the contemplated restoration is of paramount importance [3]. In this respect, many factors may play a role in improving the survival and fracture resistance of the restored ETT; these include volume and integrity of the remaining tooth structure, anatomy/morphology of the root canal, position of the tooth in the dental arch, presence of proximal contacts, nature of occlusion, core material, restoration design, ferrule effect, and number of remaining walls [4,5]. Among the former factors, the ferrule effect and number of remaining walls seem to be particularly important [6]. A ferrule effect was introduced by Eissman and Radke [7] to describe the 360-degree ring of cast metal and recommended the extension of the definitive cast restoration at least 2 mm apical to the junction of J Prosthodont Res. 2023; **(**): ****-****

Background:Education plays an important role and is a second major (non-medical dimensional) factor influencing the health status. Individuals demonstrate oral practices that impact the oral health positively or negatively. This study analyzes how self-reported oral practices are influenced by different educational levels among young adults in Jizan.Materials and Methods:The survey was conducted in four areas around University of Jizan. The survey subjects, aged between 15 and 34 years, completed the self-administered, structured questionnaire. Inter-group comparison was done using Chi-square test. Level of significance was fixed at P < 0.05.Results:Exactly 1597 subjects completed the survey. Of these, 644 (40.3%) had attained higher education, 884 (55.4%) had lower education, and 69 (4.3%) were illiterate. Statistical comparisons showed significant differences among the three groups with respect to the use of toothbrushes (χ2 = 88.67, P < 0.001), use of interdental cleaning aids (χ2 = 15.04, P < 0.001), siwak use (χ2 = 16.31, P < 0.001), cigarette smoking (χ2 = 14.28, P < 0.001), and khat chewing (χ2 = 38.1, P < 0.001). Siwak use was more among those with low educational level and illiterates. Further, smoking and khat chewing were significantly more prevalent among illiterates.Conclusion:The subjects with low education and the illiterates exercise harmful oral practices. This study indicates that educational level is responsible for inequities in oral practices.