Comparative Evaluation of Accuracy of a New Bite Registration Material with Conventional and Intraoral Digitally Scanned Bite Registration: An In-Vivo Study

Background: Accurate bite registration is essential in prosthodontics to ensure proper occlusion, function, and longevity of dental restorations. With advancements in digital dentistry, materials such as scannable vinyl polysiloxane (VPS CAD) and intraoral digital bite records have emerged as alternatives to traditional methods. This study aimed to evaluate and compare the accuracy of a new VPS CAD bite registration material with conventional VPS and intraoral digitally scanned bite records. Methods: This in vivo cohort comparative study included healthy individuals aged 20–30 with complete dentition. Bite registrations were obtained using three techniques: conventional VPS material, VPS CAD material, and intraoral scanning via Medit i500. A standard 2 mm interocclusal separation was maintained using a leaf gauge. All bite records were converted into digital files and analyzed using GOM Inspect 2018 software to evaluate 3D surface deviations. Data were statistically analyzed using ANOVA, Tukey’s post hoc test, and independent t-tests. Results: The mean surface deviation values between the three groups showed no statistically significant differences on both right (p = 0.707) and left (p = 0.186) sides. Pairwise comparisons between VPS, VPS CAD, and digitally scanned bite records revealed no significant variation, indicating comparable accuracy. Conclusions: There is no significant difference in the accuracy of bite registration among VPS, VPS CAD, and digitally scanned methods. All three techniques provide clinically acceptable results and may be used interchangeably depending on clinical preference or workflow requirements.