Neutral Zone Case Report
Influence of neutral zone in complete denture fabrication– A Case Report
Abstract
Completely edentulous patients wearing dentures since long time have a problem with decreased stability of their mandibular complete dentures because of severe resorption of lower edentulous ridge & altered neuromuscular control. By incorporating neutral zone technique in complete denture fabrication can overcome this problem.
Keywords:- Condensation Silicone, Neutral Zone, Denture stability
Introduction
In edentulous patients, ridge resorption continues with advancing age. The greater the ridge loss, the smaller the denture base area that leads to reduced stability and retention of the denture. To overcome this problem, dentures are fabricated with their contours …show more content…
A 71 years old male patient with a completely edentulous and severely resorbed mandibular ridge reported in the Department of Prosthodontics. Patient was denture wearer since 5 years & presented with complain of ill-fitting lower …show more content…
After that Condensation silicone ( Poly-Dimethyl Siloxane) putty impression material was adapted over the modified denture base at established vertical dimension & moulded according to the muscle action in neutral zone by asking the patient to do actions like swallowing & saying words like “oo”, “eee”. The internal (Tongue musculature) and external muscle groups ( Buccinator & Orbicularis group of muscles) have been brought into action, moving them through their respective action paths. In doing so, reciprocating pressures have been exerted upon the heavy body condensation silicone impression material , which had gradually moulded into a state of neutral balance and become centrally inert in relation to all of the complex forces acting upon it. The neutral zone impression so obtained was placed on master model, location grooves were cut on the Master cast and was covered with Type-II Dental Plaster index around the impression on both the labial and lingual sides. (Figure
Abstract
Completely edentulous patients wearing dentures since long time have a problem with decreased stability of their mandibular complete dentures because of severe resorption of lower edentulous ridge & altered neuromuscular control. By incorporating neutral zone technique in complete denture fabrication can overcome this problem.
Keywords:- Condensation Silicone, Neutral Zone, Denture stability
Introduction
In edentulous patients, ridge resorption continues with advancing age. The greater the ridge loss, the smaller the denture base area that leads to reduced stability and retention of the denture. To overcome this problem, dentures are fabricated with their contours …show more content…
A 71 years old male patient with a completely edentulous and severely resorbed mandibular ridge reported in the Department of Prosthodontics. Patient was denture wearer since 5 years & presented with complain of ill-fitting lower …show more content…
After that Condensation silicone ( Poly-Dimethyl Siloxane) putty impression material was adapted over the modified denture base at established vertical dimension & moulded according to the muscle action in neutral zone by asking the patient to do actions like swallowing & saying words like “oo”, “eee”. The internal (Tongue musculature) and external muscle groups ( Buccinator & Orbicularis group of muscles) have been brought into action, moving them through their respective action paths. In doing so, reciprocating pressures have been exerted upon the heavy body condensation silicone impression material , which had gradually moulded into a state of neutral balance and become centrally inert in relation to all of the complex forces acting upon it. The neutral zone impression so obtained was placed on master model, location grooves were cut on the Master cast and was covered with Type-II Dental Plaster index around the impression on both the labial and lingual sides. (Figure