A Mixed Vertical Preparation Approach for Crown Replacement: A Concept-Driven Clinical Report

Area of Science:

• Dentistry
• Prosthodontics
• Periodontology

Background:

• Full circumferential Biologically Oriented Preparation Technique (BOPT) in prosthetic retreatment is technique-sensitive.
• Achieving both periodontal tissue conditioning and prosthetic margin control can be challenging.

Purpose of the Study:

• To describe a mixed vertical preparation strategy for prosthetic retreatment.
• To balance esthetic demands with prosthetic predictability and periodontal health.

Main Methods:

• A selective literature review and a clinical case report.
• Implementation of a mixed vertical preparation: BOPT on the vestibular surface and VertiPrep on proximal/palatal surfaces.
• Provisional restoration-driven soft tissue maturation over 6-8 weeks.

Main Results:

• Localized vestibular tissue conditioning improved marginal tissue thickness.
• Proximal and palatal VertiPrep ensured precise margin positioning.
• The approach balanced soft tissue conditioning with margin control.

Conclusions:

• The mixed vertical preparation is a pragmatic option for selected crown retreatment cases.
• It effectively balances vestibular soft tissue conditioning with proximal/palatal margin control.
• Further prospective studies are needed to confirm long-term predictability.