Imran Samejo, Irfan Ahmed Shaikh, Erum Behroz.
Impression techniques and materials used for fixed partial denture fabrication: a survey among general dental practioner and specialists in sindh.
Pak Oral Dental J Jan ;36(4):673-6.

The purpose of this study was to evaluate which impression materials and techniques are used for fixed partial denture fabrication among general dental practitioners and specialists in Sindh. In this cross sectional study, 06 structured questionnaires regarding fixed partial denture impression materials and techniques were prepared. Questionnaires were distributed randomly among 150 specialists and general dental practitioners in Sindh. In this study the response rate was 84%. The material of choice for diagnostic impression was irreversible hydrocollide among specialists 91% and general dental practitioners 25%. Complete arch tray was most commonly used by specialists (78%) and general dental practitioners (88%). To expose the finish line, 91% of the specialists used gingival retraction cord with chemical and most of the general dental practitioners were not using gingival cord 84%. The most common material of the choice for impression after tooth preparation was additional silicon and alginate used by specialists (52%) and general dental practitioner 76% respectively. Type III dental stone was used by specialists (83%) and type II by general dental practitioners (88%). Articulation of cast prior to sending laboratory by specialists and general dental practitioners was 74% and 18% respectively. Long term success of fixed partial denture is based on materials and techniques. Most of the prosthodontist used recommended impression materials and techniques. Ideal materials and techniques were not followed by general dental practitioners which may lead to compromised and failure of final prosthesis.

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