Page 122 - Impact of implant retained overdenture treatment and speech, oromyofunction, social participation and quality of life.

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Chapter 5
personality traits may account for this differential experience 24–26. Al-Omiri et al (2014) found that about 10% of the patients with a conventional prosthesis reported less satisfaction despite a technically and functionally perfect denture. Their research showed that particular personality traits were predictive of this pattern, with Neuroticism associated with lower satisfaction with the final result. Moreover, Conscientiousness was positively, whereas Openness to experience was inversely related to pain tolerance. Extraversion was positively associated with satisfaction with eating 25. Özhayat et al found that high scores on negative affect and low self-esteem had a negative influence on oral health related quality of life before and after dental treatment. Patients with high scores on negative affect (closely related to neuroticism) reported lower satisfaction with their new dental prosthesis after treatment, despite the fact that the treatment was equally successful as the treatment performed on patients scoring low on negative affect 27. Torres et al (2011) found in subjects with a prosthodontic treatment in the mandible that Neuroticism was predictive for all scales of the Oral Health related Impact Profile (OHIP) 28. Quality of life in patients with conventional dentures, was predicted by Neuroticism and Conscientiousness together with gender. Quality of life in patients with dentures on implants could be explained by Neuroticism, Openness and educational level 29. Therefore we hypothized in the present study an association between the five personality traits and quality of life and social participation before and after dental rehabilitation.
Research on the impact of prosthodontic treatment on quality of life and social relationships in patients almost exclusively relied on self-reports of experienced health status and interpersonal functioning. Although self-reports provide insightful information, there is a methodological problem of common rater bias. Especially when patients have undertaken efforts such as invested time, undergoing surgery, financial consequences, their reported treatment impact may be biased. Costa and McCrae (1987) further argued that we cannot assume that people can rate their own health conditions accurately, because personality traits may bias the perception and reporting of medical symptoms. To overcome these biases, it is recommended to expand self-ratings with reports by an informed external observer who knows the daily functioning of the patient well. Including such extra observer perspective in the evaluation of prosthodontic treatment would be a key innovation in this type of research 19.