title: Effect of stress on information processing in the dental implant surgery setting.
abstract: OBJECTIVE
  Dental implantation is a stressful experience, both physically and psychologically. The effect of anxiety on the patient's ability to process relevant information prior to a stressful clinical situation (implant insertion) was evaluated.
  
  
  METHODS
  The study included 98 healthy patients, scheduled for implant insertion. Two different audio-tapes with relevant information regarding implant insertion were listened to immediately pre-operatively. Recognition questionnaires, consisting of 21 statements (correct and false information) were prepared, one for each tape. The dental anxiety scale (DAS), degree of state anxiety (SA), evaluation of pain expected during surgery, and extent to which patients understood the information provided were examined on 100 mm visual analogue scales.
  
  
  RESULTS
  A significant positive correlation was found between patients' DAS and SA and between patients' expectation to experience pain during the surgical procedure. Certainty of understanding (CU) significantly contributed to the explanation of correctly classified statements (beta=-0.43, t=3.71, P<0.01). CU was positively related to SA and negatively to DAS.
  
  
  CONCLUSIONS
  In a stressful pre-surgical situation, the ability to process relevant information may be severely impaired and should not be given to patients immediately before planned treatment.
authors.affiliation: Department of Oral and Maxillofacial Surgery, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Tel Aviv, Israel.
authors.forename: Devorah
authors.initials: D
authors.lastname: Schwartz-Arad
authors.forename: Yoram
authors.initials: Y
authors.lastname: Bar-Tal
authors.forename: Ilana
authors.initials: I
authors.lastname: Eli
mesh_terms: D000328:Adult; D001007:Anxiety / Q000503:physiopathology / Q000523:psychology; D032882:Comprehension / Q000502:physiology; D016854:Dental Anxiety / Q000503:physiopathology* / Q000523:psychology; D003758:Dental Implantation, Endosseous / Q000523:psychology; D005260:Female; D006801:Humans; D008297:Male; D008606:Mental Processes / Q000502:physiology*; D010146:Pain / Q000523:psychology; D010147:Pain Measurement; D010353:Patient Education as Topic; D021641:Recognition, Psychology; D013315:Stress, Psychological / Q000503:physiopathology* / Q000523:psychology