Biomedical subjects
Publications and source records attributed to A S Duinkerke.
To achieve high quality pictures decisions have to be made regarding the camera and lenses, the lighting, the photographic film, the photographic procedures and the registration of the pictures in the files of the patient. The necessity of standardisation and the difficulties in achieving this are mentioned. The use of pictures in orthodontic diagnosis, treatment planning, treatment follow-up and quality control are described too.
Comments are given on a recent judgement of a medical disciplinary tribunal in The Netherlands. It is stated that the interexaminer variation in the interpretation of periapical radiolucencies is large. Therefore the problem arises if a dentist may be blamed for not detecting a periapical radiolucency on a dental radiograph. A demand for systematic radiographic examination of all teeth with large fillings is also questionable, especially during periodic examinations of the dentition in patients without pain or symptoms of inflammation.
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The aim of this investigation was to explore the relative importance of psychologic variables in explaining the degree of denture satisfaction in full denture patients. A group of 125 patients who were on a waiting list to have new dentures constructed participated in this study. The patients completed the Dutch version of the Hopkins Symptom Checklist, the Dutch Personality Inventory, a denture satisfaction questionnaire and a denture complaint questionnaire. No relation was found between the personality variables and denture satisfaction as measured by the denture satisfaction questionnaire. When the different aspects of denture satisfaction were measured by means of complaint scales, satisfaction was related to personality traits. Functional complaints of the mandibular denture and complaints about a hollow face were related to the personality trait "extraversion-introversion". Vague denture complaints and complaints about a bulbous face were related to "neuroticism".
In this investigation an anxiety scale was constructed to measure dental anxiety in full denture patients. Furthermore, the relationship of this anxiety scale with denture history, denture satisfaction, and personality traits was investigated. A group of 125 patients who were on a waiting list to have new dentures constructed participated in this study. The coefficient alpha value of the anxiety scale was 0.81. Significant correlations were found with number of years with complete dentures (r = -0.20), with denture complaints (r = 0.18-0.19) and with some personality traits (r = 0.21-0.32). Further research into the role of dental anxiety with respect to dental behaviour and dental satisfaction in edentulous populations seems useful.
In this investigation 113 patients with full upper and lower dentures filled in a dental anxiety questionnaire, developed from Corah's dental anxiety scale for edentulous subjects. Relations of this anxiety questionnaire with denture satisfaction, age and sex of the patient and with number of years of edentulousness were found.
The aim of this investigation was to evaluate the reliability and validity of a complaints questionnaire, designed to measure different aspects of denture satisfaction. Two groups of patients with full maxillary and mandibular dentures participated in the study. The patients in Group 1 (n = 113) were on a waiting list for new dentures, patients in Group 2 (n = 102) had recently had new dentures fitted. Five denture complaint scales were constructed from the questionnaire. The internal consistency (coefficient alpha) of the scales varied from 0.65 to 0.92. Furthermore, the scales showed a discriminatory ability between the patient groups (P less than or equal to 0.001) and significant Pearson correlation coefficients with satisfaction-related questions (r = 0.25-0.79). The scores on the scales can be considered a quantitative measure of denture satisfaction.
The aim of this study was to measure the relative importance of a number of psychologic and social variables in explaining the severity of symptoms of functional disturbances of the stomatognathic system. 261 non-care seeking patients with respect to pain and dysfunction of the stomatognathic system were examined. The total sample consisted of two subgroups: Group 1 (n = 130) with a complete natural dentition and Group 2 (n = 131) wearing complete maxillary and mandibular dentures. Symptoms of functional disturbances of the stomatognathic system were assessed using two questionnaires. One was derived from the Anamnestic Dysfunction Index and the other was an extended questionnaire which included accessory symptoms frequently mentioned in the literature. The patients also completed the Hopkins Symptom Checklist, the Dutch Personality Inventory, and a Dutch form of the Minnesota Multiphasic Personality Inventory. In both patient subgroups symptoms of functional disturbances of the stomatognathic system were significantly correlated with patient's sex and a complex of highly intercorrelated psychologic variables: psychoneurotic- and somatic symptoms, neuroticism, negativism, and somatization.
The aim of this study was to measure the relative importance of a number of psychologic and social variables in explaining the severity of signs of functional disturbances of the stomatognathic system. A group of 261 non care seeking patients with respect to pain and dysfunction of the stomatognathic system were examined. The total sample consisted of two subgroups: Group one (n = 130) with a complete natural dentition and Group two (n = 131) wearing complete maxillary and mandibular dentures. Signs of functional disturbances of the stomatognathic system were assessed using the Clinical Dysfunction Index and a Palpation Test. The patients also completed the Hopkins Symptoms Checklist, the Dutch Personality Inventory and a Dutch form of the Minnesota Multiphasic Personality Inventory. Patient education, age and sex were also registered. In both patient subgroups signs of functional disturbances of the stomatognathic system were significantly correlated with patient's sex and a complex of highly intercorrelated psychologic variables: psychoneurotic and somatic symptoms, neuroticism and somatization.
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Assessment of denture quality is important in prosthetic research. The aim of this investigation was to determine the intra- and interexaminer reliability of denture quality assessment. Three groups of patients with full maxillary and mandibular dentures and two dentists participated. The patients in group 1 (n = 195) were examined by the two dentists independently, in group 2 (n = 35) twice by one of the dentists and in group 3 (n = 20) twice by the other dentist. A denture quality scale was constructed containing nine variables. The internal consistency (coefficient alpha) of this scale was 0.60. The intra- and interexaminer reliability was between 0.59 and 0.86. For individual items of this scale these values were between 0.22 and 1.00.
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The reproducibility of estimations of the alveolar crest height based on their relationship to two other fixed points on the tooth has been analyzed in a study of 302 routine periapical radiographs of 96 endodontically treated teeth. The radiographs were made at normal recall appointments by use of the extension tube paralleling technique. The various distances between four fixed points on each tooth in any radiographic series were compared by means of a statistical model. The results indicate that, in periodontal follow-up studies, completely standardized projection of the structures onto the film is unnecessary since measurements of the crest height can be related to any suitable fixed measuring standard on the tooth.