Hemisection: a simple and elegant technique

Abstract

Agenesis of lower second premolars in an uncrowded dentition can represent a significant clinical challenge. Leaving the second primary molars and ultimate prosthetic replacement places a dental and financial burden on the patient. Therefore, space closure while often the preferred option, can be very difficult while controlling the overbite and position of the lower labial segment. Also loss of alveolar bone may make this impossible. Hemisection of the lower second primary molar can facilitate space closure by maintaining bone and if done at the correct time, allow the first molar to move mesially resulting in spontaneous space closure. This article describes this technique and illustrates it clinically. CPD/Clinical relevance Hypodontia of the lower second premolars is a common problem and space closure to negate the need for expensive prosthodontics can be challenging. Hemisection of the second primary molar is a relatively simple procedure that can make space closure more predictable.