Cephalometry: Rationale for Management of Recurrent Fracture of Maxillary Prosthesis.
Journal Title: International Journal of Dental Science and Innovative Research (IJDSIR) - Year 2019, Vol 2, Issue 3
Abstract
A 65-year-old male patient reported to the Department of Prosthodontics with the chief complaint of broken maxillary complete denture and wanted a new set of dentures for the same. On clinical examination, the maxillary arch was completely edentulous while the mandibular arch was partially edentulous with few teeth remaining in the posterior region. The patient had a history of prosthetic rehabilitation with complete denture and removable partial denture in both maxillary and mandibular arches respectively. The patient also reported that the maxillary dentures fractured very frequently since the inception of rehabilitation. However, the surfaces and contours of the dentures appeared quite satisfactory in compliance with the intraoral examination. The high magnitude of masticatory forces may be held responsible for frequent fracture of the maxillary denture in such cases. To check the patient’s biting force, lateral cephalogram was used as a diagnostics aid. This hypothesis is based on the literature where Frankfurt mandibular plane angle (FMA) has been described as a major determinant of variation in musculature and masticatory forces associated with muscles and occlusion. The FMA may be either high or low which clinically manifests in the patient in terms of a high angle or lowangle patients where the optimum value is considered to be somewhere around 25 degrees. Frankfurt mandibular plane angle was determined after tracing the lateral cephalogram. The lateral cephalogram was furthercorrelated with the clinical condition of the patient and it was found that FMA in the present case was less than 20 degree which implies that the FMA was on the lower side and therefore the magnitude of biting force in this patientwas very high. It was therefore decided to make a prosthesis which may encounter these forces. To remedy the situation it was decided to reinforce maxillary denture base with metal in the maxillary complete denture.
Authors and Affiliations
Dr. Pavan Dubey
Keywords
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