title: Influence of the fast-processing technique on the number of the occlusal contacts and occlusal vertical dimension of complete dentures.
abstract: OBJECTIVE
  Occlusal errors during acryl processing affect the retention and stability of complete dentures. The aim of the present study was to assess the influence of a short curing technique on the number of occlusal contacts and the occlusal vertical dimension (OVD) of complete dentures.
  
  
  METHODS
  Complete dentures were prepared. The number of occlusal contacts was recorded in centric relation (CR) using 60 µ articulation paper. The OVD was recorded with the waxed trial denture in place. Dentures were then invested and processed with compression molding and short cure water bath technique. The number of occlusal contacts was recorded again. The amount of pin opening was measured for all of the complete dentures on the articulator. Data were analyzed with paired t-test to determine the alterations.
  
  
  RESULTS
  The mean number of occlusal contacts before and after processing was 10.9 ± 2.4 and 6.3 ± 3.1 respectively (4.7 ± 1.9 decrease; p < 0.001). A 2 mm mean increase in OVD was observed in 47.7% of the dentures with < 6 occlusal contact changes and 88.9% of the dentures with ≥ 6 occlusal contact changes (p < 0.003). A significant change in the number of occlusal contacts was associated with an OVD increased up to two times.
  
  
  CONCLUSIONS
  The short curing technique seems to be related to the decreased occlusal contacts and increased OVD. CLINICAL SIGNIFICANCES: More time is needed to adjust the occlusal errors of this method, because it has a negative effect on the morphologic pattern of artificial teeth of complete dentures and thus should be used carefully.
authors.affiliation: Department of Prosthodontics, Dental Branch, Islamic Azad University, Tehran, Iran. p_atashrazm@sbmu.ac.ir
authors.forename: Parsa
authors.initials: P
authors.lastname: Atashrazm
authors.forename: Leila Zamani
authors.initials: LZ
authors.lastname: Alavijeh
authors.forename: Maryam Sadat Sadrzadeh
authors.initials: MS
authors.lastname: Afshar
mesh_terms: D000180:Acrylic Resins; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003768:Dental Occlusion, Centric; D003779:Denture Design / Q000009:adverse effects / Q000379:methods*; D003824:Denture, Complete; D005260:Female; D006801:Humans; D007574:Jaw Relation Record; D008297:Male; D008875:Middle Aged; D013997:Time Factors; D014093:Tooth, Artificial; D014716:Vertical Dimension
chemical_list: D000180:Acrylic Resins