title: Effect of adaptation time on the occlusal force at denture dislodgement with or without denture adhesive.
abstract: BACKGROUND
  The effect of denture adhesives on the occlusal forces at the dislodgement (OFD) of new complete dentures during the adaptation period has not been previously studied.
  
  
  OBJECTIVE
  The purpose of this study was to investigate the OFD of dentures after their insertion and 3 months later, with or without denture adhesives.
  
  
  METHODS
  Thirteen volunteers with edentulism were enrolled in the study. Each participant had new complete maxillary and mandibular dentures. The occlusal forces (N) at denture dislodgement were assessed with or without 2 adhesives by using an electronic gnathodynamometer in the incisal and premolar regions on the existing denture, the new denture immediately after fitting, 45 days later, and 90 days later. The statistical analysis included the Wilcoxon and Kruskal-Wallis tests, repeated measures ANOVA, and the Pearson coefficient at α=.05.
  
  
  RESULTS
  Repeated measures ANOVA for new dentures showed that the OFD in the incisal or premolar region were significantly different between adaptation periods (P<.05) but not between adhesives. OFDs of dentures with and without adhesives correlated highly at all adaptation periods (0.912 to 0.995).
  
  
  CONCLUSIONS
  The adaptation period does affect the OFD of new dentures, but the 2 adhesives were found to have the same effect on the OFD.
authors: Associate Professor, Department of Prosthodontics, Dental School, University of Athens, Athens, Greece. Electronic address: grepolyz@dent.uoa.gr.
authors: Gregory
authors: G
authors: Polyzois
authors: Clinical Associate, Department of Prosthodontics, Dental School, University of Athens, Athens, Greece.
authors: Christos
authors: C
authors: Partalis
authors: Associate Professor, Department of Operative Dentistry, Dental School, University of Athens, Athens, Greece.
authors: Panagiotis
authors: P
authors: Lagouvardos
authors: Pharmacy student, School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton, United Kingdom.
authors: Hector
authors: H
authors: Polyzois
mesh_terms: D000222:Adaptation, Physiological / Q000502:physiology*; D000269:Adhesives / Q000737:chemistry; D000368:Aged; D000464:Alginates / Q000737:chemistry; D001641:Bicuspid; D001732:Bite Force; D002266:Carboxymethylcellulose Sodium / Q000737:chemistry; D002482:Cellulose / Q000737:chemistry; D003819:Denture Bases; D003781:Denture Retention; D003824:Denture, Complete; D003826:Denture, Complete, Lower; D003827:Denture, Complete, Upper; D005260:Female; D005500:Follow-Up Studies; D020723:Glucuronic Acid / Q000737:chemistry; D006603:Hexuronic Acids / Q000737:chemistry; D006801:Humans; D007180:Incisor; D008297:Male; D008875:Middle Aged; D009066:Mouth, Edentulous / Q000534:rehabilitation; D011108:Polymers / Q000737:chemistry; D011126:Polypropylenes / Q000737:chemistry; D014160:Transducers, Pressure
chemical_list: D000269:Adhesives; D000464:Alginates; D006603:Hexuronic Acids; D011108:Polymers; D011126:Polypropylenes; C071530:Super Poli-Grip; D020723:Glucuronic Acid; D002482:Cellulose; C012024:rayon, purified; D002266:Carboxymethylcellulose Sodium