Abstract
Edentulism from a long term results in high resorption of lower edentulous ridge which often pose a problem in stability of mandibular complete dentures. It is a challenge for a prosthodontist to rehabilitate those patients to near normal function, irrespective of the clinical picture. This paper presents neutral zone technique in a functional approach to overcome the problem of instability of lower dentures caused in patients by a more potential musculature.
Highlights
All oral functions, such as speech, mastication, swallowing, smiling, and laughing, involve the synergistic actions of the tongue, lips, cheeks, and floor of the mouth which are very complex and highly individual
Many materials have been suggested for shaping the neutral zone: modelling plastic impression compound, soft wax, a polymer of dimethyl siloxane filled with calcium silicate, silicone, and tissue conditioners and resilient lining materials
Maxillary final cast was fabricated by the conventional manner but as lower ridge was highly resorbed, recording of neutral zone was planned to record that, denture base was fabricated with wire loops embedded in it for holding the admixed impression material during al movements. (Figure3)
Summary
All oral functions, such as speech, mastication, swallowing, smiling, and laughing, involve the synergistic actions of the tongue, lips, cheeks, and floor of the mouth which are very complex and highly individual. The coordination of complete dentures with the neuromuscular function is the foundation of successful, stable denture.[1]. If dentist fails to recognize the correct tooth position and proper flange position it creates more problems to the patient rather than without complete dentures. The unstable lower complete denture is a continuing problem for our profession.[2]. Incorrect tooth placement and arbitrary shaping of the polished surfaces may have an adverse effect on the success of the prosthesis. Many materials have been suggested for shaping the neutral zone: modelling plastic impression compound, soft wax, a polymer of dimethyl siloxane filled with calcium silicate, silicone, and tissue conditioners and resilient lining materials. In the present case report, speech technique located the neutral zone, with the help of Mac-cord impression material
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