title: Effect of palatal form on movement of teeth during processing of complete denture prosthesis: An in-vitro study.
abstract: OBJECTIVE
  The aim of this in-vitro study was to assess the influence of shallow and deep palatal forms on the movement of teeth during the processing of complete denture prosthesis.
  
  
  METHODS
  Maxillary casts with shallow and deep palatal forms were selected and duplicated to make 10 casts of each palatal form. Base plates were constructed and teeth were arranged in their anatomic positions. Metal pins with true apex were placed on the central groove of the right and left first molars and one on the incisive papilla area as a reference point. Casts were scanned using i-CAT Vision Q 1.9 (i-CAT cone beam 3D dental imaging system by Imaging Sciences International, PA, USA), which has 360° rotational tomography. The distances between the apices of metallic pin inserts on the teeth and fitted point of reference were recorded in buccopalatal axes at waxed up stage, after deflasking, and after finishing and polishing.
  
  
  RESULTS
  Results showed a statistically significant movement of teeth in shallow and deep palatal forms during all stages of complete denture processing. In shallow palatal form dentures, there was a significant tooth movement in palatal direction between Stages 1 and 2 (P ≤ 0.05) and buccal movement between Stages 2 and 3. In deep palatal form dentures, teeth showed a statistically significant (P ≤ 0.05) movement in buccal direction during all stages of denture processing.
  
  
  CONCLUSIONS
  Teeth showed significant movement during processing of acrylic resin dentures. Overall, the movement of teeth in shallow palatal form dentures was in palatal direction, whereas in deep palatal form dentures, the movement of teeth was in buccal direction.
authors.affiliation: Department of Substitutive Dental Sciences, College of Dentistry, University of Dammam, Dammam 31441, Kingdom of Saudi Arabia.
authors.forename: Sumanth
authors.initials: S
authors.lastname: Babu
authors.affiliation: Vikram Perfect Multispecialty Center, Mysore, Karnataka, India.
authors.forename: Shaurya
authors.initials: S
authors.lastname: Manjunath
authors.affiliation: Department of Periodontology and Implantology, Jodhpur Dental College General Hospital, Jodhpur, Rajasthan, India.
authors.forename: Mayuri
authors.initials: M
authors.lastname: Vajawat
keywords: Complete denture; denture teeth; palatal form