Dentin contamination protection after mechanical preparation for veneering

Area of Science:

• Dentistry
• Dental Materials Science
• Microbiology

Background:

• Post-operative sensitivity and bacterial invasion are common concerns following laminate veneer preparation.
• Protecting prepared dentin is crucial for successful dental restorations.

Purpose of the Study:

• To evaluate the in vivo efficacy of dentin priming in preventing post-operative sensitivity.
• To assess the effectiveness of primed dentin in inhibiting bacterial invasion after laminate veneer preparation.

Main Methods:

• Twelve vital anterior teeth were prepared for laminate veneers and divided into three groups: control (unprotected), Tubulitec Primer, and All-Bond 2 Primer.
• Post-operative sensitivity was assessed immediately and after 4 days.
• Teeth were extracted and examined using Scanning Electron Microscopy (SEM) for bacterial penetration.

Main Results:

• Dentin priming with either Tubulitec Primer or All-Bond 2 Primer completely prevented post-operative sensitivity.
• Unprotected dentin (control group) exhibited sensitivity to air blasts after 4 days.
• Bacterial penetration into dentin tubules was observed in the control group but not in the primed groups.

Conclusions:

• Dentin priming is a highly effective method for preventing post-operative sensitivity after laminate veneer preparation.
• Priming dentin significantly inhibits bacterial invasion into dentin tubules, even when left unprotected for an extended period.
• These findings support the routine use of dentin primers in laminate veneer procedures to enhance patient comfort and prevent microbial contamination.