Practice-based preclinical instruction for gingival displacement with animal models

Area of Science:

• Dental Education
• Fixed Prosthodontics
• Preclinical Training

Background:

• Gingival displacement is a critical yet challenging procedure in fixed prosthodontics.
• Current preclinical training lacks realistic simulation methods for dental students.
• Effective training is essential for improving patient care outcomes.

Purpose of the Study:

• To evaluate the efficacy of practice-based preclinical instruction using animal models for gingival displacement.
• To determine if this novel training method enhances dental students' clinical skills.
• To assess the impact on students' ability to perform gingival displacement effectively.

Main Methods:

• Isolated bovine and porcine jaws were used to simulate human dentogingival environments.
• Experienced dentists validated the animal models' similarity to human teeth for gingival displacement.
• Predoctoral dental students were randomized into groups receiving either practice-based or traditional instruction.
• Clinical performance was assessed based on the effect of displacement and impression quality.

Main Results:

• Porcine and bovine jaws provided comparable dentogingival environments to human teeth.
• Students receiving practice-based instruction showed significantly higher acceptable rates for gingival displacement effect (P<.001).
• Practice-based instruction also led to a significant improvement in the quality of dental impressions (P<.001).

Conclusions:

• Practice-based instruction utilizing animal models is an effective method for teaching gingival displacement.
• This approach significantly enhances dental students' learning and clinical performance.
• Animal models offer a viable simulation for improving preclinical dental education.