Reports & Studies

Piezo surgery: simplified Extraction of Third Molars

Clinical Perspectives of Prof. José Carlos Rosas Díaz


Dr José Carlos Rosas Díaz
  • Expert in oral rehabilitation, implantology, and periodontology
Dr José Carlos Rosas Díaz

Which diagnostic steps are necessary before extraction?

Dr Rosas Díaz: Before the extraction, a thorough clinical and tomographic diagnosis is essential in order to accurately assess the bony structures surrounding the third molars and to plan an appropriate surgical approach.

Which complications occur most frequently during the extraction of impacted molars? And how can they be avoided?

Dr Rosas Díaz: Pain, inflammation, haematomas, and infections are the most common complications. In my experience these can be reduced by keeping mucoperiosteal flaps as small and as atraumatic as possible. This is facilitated by the use of piezosurgical osteotomy instruments , which do not rotate but cut using high frequency micro vibrations. This allows us to precisely work on bony and dental structures while protecting the surrounding soft tissue.

In your clinical experience, how does the type of osteotomy cut performed with piezo technology affect postoperative complications such as swelling, pain, or nerve injuries?

Dr Rosas Díaz: The precision of the osteotomy and the overall surgical approach play an important role in postoperative healing. When I work with more controlled, tissue‑sparing cuts, procedures often feel more efficient, and I can usually keep flap design more limited. In selected cases, this has been associated with less postoperative swelling and discomfort. From a clinical perspective, minimizing flap size and avoiding unnecessary trauma are key factors, regardless of the specific instrument used.

Figure 1: Cauterisation using the coagulation tip of the electrosurgical unit (a). Flap elevation (b). Osteotomy performed with the B6 piezo saw insert for the W&H Piezomed (c).

Figure 2: Osteotomy with the B6 saw insert of the W&H Piezomed (a, b). Demarcation of the boundaries of the bone ostectomy fragment (c).

Which clinical factors influence your decision between conventional techniques and a piezosurgical approach with potentially better postoperative tolerance?

Dr Rosas Díaz: The greatest influence comes from the possibility of reducing pain, inflammation, and infection by performing smaller, more tissue preserving flap preparations – something that is more feasible with piezo technology in many cases.

Thank you for the interview.

About Dr José Carlos Rosas Díaz

Dr José Carlos Rosas Díaz, former Director of the School of Stomatology at the Universidad Privada San Juan Bautista (UPSJB) in Lima, Peru, holds a master’s degree in stomatology and serves as a researcher at the UPSJB. He is a specialist in Comprehensive Oral Rehabilitation, Comprehensive Oral Implantology, and Periodontology.


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