Introduction: Orthodontic treatment relies heavily on accurate diagnosis and treatment planning. Traditionally, study casts obtained from plaster models have been an essential component of orthodontic records. However, advancements in three-dimensional imaging and modeling have introduced digital alternatives, offering ease of access, storage, and transfer of patient information
Aim and Objectives: To compare the accuracy of linear measurements obtained from 3D printed models with those taken from plaster study models and identify the most reliable type of printed model.Materials and Method: The study was conducted on ten patients requiring fixed orthodontic treatment. Dental impressions were scanned using laser desktop scanners and intraoral scanning of patients maxillary dentition, and then resulting images were converted to stereolithography (STL) format for 3D printing. Linear measurements, including tooth size and arch width, were taken using a digital caliper on plaster, intraoral, and laser scanned printed models
Results: Statistical analysis revealed no significant differences in tooth size and arch width measurements between plaster models and both types of 3D printed models (intraoral and laser scanned). The average differences in mesio-distal width measurements were found to be within clinically acceptable ranges
Conclusion: Three-dimensional imaging and 3D printing technologies have revolutionized orthodontics, providing accurate and reliable digital alternatives to traditional plaster models. The study findings support the use of 3D printed models for orthodontic diagnosis and treatment planning, indicating their potential to replace plaster models in the future.
