Prosthodontic Dichotomy

INTRODUCTION

The principal goal of the Prosthodontics is to control oral disease while restoring aesthetics and function with durable biocompatible restorations. Knowledge of the responses of periodontal tissues to fixed partial dentures is crucial role in in the development of treatment plans with predictable prognoses. During diagnosis, treatment planning, and active therapy, each patient’s needs must be considered in light of the available evidence, which includes published clinical trials, anecdotal reports from peers, and personal clinical experiences. Critical evaluation of available evidence should be included in the decision-making processes for a predictable result. The fixed partial denture (FPD) is a common treatment available for

The replacement of missing teeth with fixed partial dentures is largely dependent upon the health and stability of the surrounding periodontal tissues. The gingival tissues should exhibit scalloped margins, sulcus depth within the range of 1–3 mm and an adequate width of attached gingiva.

The clinical performance of a crown is directly linked to its mechanical, esthetical, and biological properties. Cementation and marginal integrity play a key role in the long-term prognosis of the treatment. In fact, the marginal fit (MF) opening value has very important clinical significance. The maximal MF opening should not exceed 100 µm to safeguard the long-term success of the crown. The Greater values may compromise the biological and periodontal integration of the crown, its durability, cement integrity, and health of the

Conventionally, patterns for dental castings have been formed from inlay casting wax. These materials combine familiarity and ease of manipulation with good replication of detail and cost effectiveness. However, waxes have two major shortcomings: A high coefficient of thermal expansion and a tendency to warp or distort upon standing. These adverse properties of wax have long been recognized and therefore attempts have been made at finding alternative materials. Initially, chemically cured resins were used as pattern materials and more recently light cured resin pattern materials were introduced. To overcome the drawbacks of these materials, Light cured pattern resins were introduced which have better fit and stability after polymerization. Literature states that the benefits of these light-curing resins are low polymerization shrinkage, adequate dimensional stability, ease of manipulation, reduced chair side time, and absence of residue on