What is the purpose of trimming study models after they are set?

Trimming study models after they are set primarily serves to ensure accurate measurements. When models are carefully trimmed, it allows for a clearer representation of the dental anatomy, facilitating easier and more precise measurements for diagnosis and treatment planning. Accurate measurements are crucial in orthodontics and prosthodontics, where the models are often utilized as a reference for custom appliances, crowns, bridges, or dentures. Neatly trimmed models ensure consistency and precision when comparing measurements or making adjustments, leading to effective treatment outcomes.

While other choices may seem relevant, such as improving visual appearance or making storage easier, the critical factor of accuracy in measurements directly impacts the effectiveness of dental procedures, making it the primary purpose of trimming study models.