1. Severe bruxism (tooth grinding and clenching)

2. Heavy occlusal force

3. Tooth wear, attrition or fracture

4. Temporomandibular joint disorders (TMD)

5. Muscle pain and fatigue in the jaw

6. Need for stable occlusal splint therapy

Polyethylenterephthal

1. Take accurate upper/lower impressions without distortion

2. Record stable centric occlusion

3. Maintain uniform thickness (2.0–3.0 mm)

4. Ensure proper retention and no movement

5. Smooth and high polish to avoid irritation

6. Adjust occlusion to remove premature contacts

7. Check passive fit before final processing

1. Flexural strength: 80–120 MPa

2. Compressive strength: 90–130 MPa

3. Hardness: Rockwell M 85–95

4. High fracture resistance and wear resistance