RESUMEN
OBJECTIVES: To evaluate the effect of small-group education including practical training on dental students' shade determination performance compared with a control group. METHODS: Sixty-three non-colour-blind preclinical students were asked to participate and belonged to an intervention (n = 31) and a control (n = 32) group, respectively. All students received a lecture on dental shade determination. The members of the intervention group were educated and practically trained in small groups in addition. Ten volunteers, each with unrestored upper right middle and lateral incisors, were recruited. The students of both the intervention and control groups were then asked to determine the colour of the volunteers' test teeth using the 3D-Master shade guide (Vita Zahnfabrik, Bad Säckingen, Germany) under artificial daylight illumination. For analytical purposes, the CIE L*a*b* coordinates were obtained using a spectrophotometer. Colour differences, ΔE, between all shade tabs selected by the students and the natural teeth were calculated. ΔE observed in the intervention and control groups were compared using t tests. In addition, a multi-level regression model was adjusted for age and gender. RESULTS: Mean (SD) ΔE between the shade tabs selected by the students and the natural teeth in the intervention and control groups were 3.8 (2.1) and 4.3 (2.3), respectively (P < .001). The effect of group membership was reproduced in multivariate analysis whereas age and gender did not reach statistical significance. CONCLUSIONS: With more intensive education and practical training the ability to perform clinical shade determinations improved for students without previous clinical experience. The results obtained support the idea of implementing thematic small-group education in the dental curriculum.
Asunto(s)
Percepción de Color , Color/normas , Educación en Odontología/métodos , Procesos de Grupo , Coloración de Prótesis/métodos , Estudiantes de Odontología/psicología , Diente , Curriculum , Estética Dental , Femenino , Humanos , Masculino , Análisis de RegresiónRESUMEN
The purpose of this in vitro study was to evaluate the effect of enamel sealants on bleaching of natural teeth by use of 40 % hydrogen peroxide in a dental surgery. The color stability of the results from bleaching was, furthermore, determined 10 months after the bleaching procedure. In a standardized setting, four sealants (Pro Seal®, Light Bond™ Sealant, Protecto®, and Clinpro™ XT Varnish) were applied to and removed from human teeth in accordance with the manufacturer's instructions. Natural teeth served as medium; half of the teeth were sealed and the others served as controls. Hydrogen peroxide gel (40 %; Opalescence Boost; Ultradent Products, South Jordan, UT, USA) was used as bleaching agent. Color measurement was performed with a spectroradiometer (Photoresearch PR670) before the bleaching process (T1) and 24 h (T2) and 10 months (T3) after bleaching. The spectroradiometer results were expressed by use of the Commission Internationale de l'Éclairage (CIE) L*a*b* color notation. The L*, a*, and b* values of the sealed and the unsealed surfaces were not significantly different at any time during the study (p > 0.05), irrespective of the sealant used. Ten months after the bleaching process, mean L*, a*, and b* values were lower than at 1-day post-bleaching; the mean value of ΔE between 1-day post-bleaching and 10 months post-bleaching was 2.46 (±3.1). The results of the study suggest that the effectiveness of professional tooth whitening is not appreciably affected by the application of the four sealants tested.
Asunto(s)
Esmalte Dental/efectos de los fármacos , Selladores de Fosas y Fisuras/farmacología , Blanqueamiento de Dientes/métodos , Color , Resinas Compuestas , Peróxido de Hidrógeno , Técnicas In Vitro , Iridiscencia , Metacrilatos , Cementos de Resina , SilicatosRESUMEN
UNLABELLED: Older people with dementia are very dependent on nursing, and caregivers are frequently confronted with oral-care-resistant behaviour which may lead to shortcomings in oral health. OBJECTIVE: To compare oral hygiene and health status of institutionalised older people suffering, or not, from dementia. BASIC RESEARCH DESIGN: Prospective cohort study (single-blind). CLINICAL SETTING: Institutionalised older population in south-west Germany. PARTICIPANTS: Ninety-three, allocated to two groups: dementia (n = 57) and non-dementia (n = 36) based on a mini mental state examination. MAIN OUTCOME MEASURES: Target variables were plaque control record (PCR), gingival bleeding index (GBI), community periodontal index of treatment needs (CPITN), and denture hygiene index (DHI). Differences between the dementia and non-dementia groups were evaluated by univariate testing of all target variables. RESULTS: Univariate analysis revealed the amount of plaque in the dementia group was significantly higher than in the non-dementia group (p = 0.004). Mean CPITN of participants in the dementia group was significantly worse than those of participants in the non-dementia group (p < 0.001). All participants in the dementia group had periodontitis in at least one of the sextants, compared with 74% in the non-dementia group (p < 0.001). For DHI (p = 0.198) and GBI (p = 0.275) no differences were found between the groups. CONCLUSIONS: Some aspects of oral hygiene and health seem to be worse for the institutionalised older people with dementia. Permanent specially adapted intervention for residents suffering from dementia in long-term care homes, and training for caregivers, is desirable to maintain life-long oral hygiene and health.
Asunto(s)
Demencia/epidemiología , Salud Bucal/estadística & datos numéricos , Higiene Bucal/estadística & datos numéricos , Anciano , Anciano de 80 o más Años , Estudios de Cohortes , Índice CPO , Caries Dental/epidemiología , Índice de Placa Dental , Dentaduras/estadística & datos numéricos , Femenino , Alemania/epidemiología , Humanos , Institucionalización/estadística & datos numéricos , Cuidados a Largo Plazo/estadística & datos numéricos , Masculino , Persona de Mediana Edad , Índice de Higiene Oral , Índice Periodontal , Periodontitis/epidemiología , Estudios Prospectivos , Método Simple CiegoRESUMEN
Visual tooth colour assessment by use of the Vita 3D-Master(®) (3D; Vita Zahnfabrik, Bad Säckingen, Germany) is well documented. To improve handling, a new linear arrangement of the shade tabs has been introduced (LG; Linearguide 3D-Master(®) ). The purpose of this study was to investigate whether the linear design has an effect on shade matching. Fifty-six students underwent identical, theoretical and practical training, by use of an Internet learning module [Toothguide Training Software(®) (TT)] and a standardised training programme [Toothguide Training Box(®) (TTB)]. Each student then matched 30 randomly chosen shade tabs presented in an intra-oral setting by a standardised device [Toothguide Check Box(®) (TCB)]; 15 matches were made using the 3D and 15 using the LG shade guide system, under a daylight lamp (840 matches for each guide). It was recorded to what extent the presented and selected shade tabs, or the lightness group of the tabs, matched, also the needed time for colour matching. The results showed that 35% of perfect matches were observed for the 3D and 32% for the LG. The lightness group was correct in 59% of cases for 3D and 56% for LG. Mean time needed for matching of tabs and lightness group was no different between groups (no significant difference for any assessment). Within the limitations of the study design, the colour assessment with regard to performance and time needed in shade matching was not different with the LG or the 3D. Therefore, the user should choose which shade tab arrangement is more applicable.
Asunto(s)
Percepción de Color , Color/normas , Diseño de Prótesis Dental/instrumentación , Coloración de Prótesis/instrumentación , Diente/anatomía & histología , Adulto , Femenino , Humanos , Masculino , Análisis de Regresión , Programas InformáticosRESUMEN
OBJECTIVE: To obtain information about the subjective oral health status of non-clinical elderly populations of urban regions of Germany, one in the East and one in the West, by using OHIP-14 and, for first time, the GOHAI, and, furthermore, to compare the results obtained by use of both instruments. BASIC RESEARCH DESIGN: Cross-sectional. CLINICAL SETTING: Randomly chosen, non-clinical elderly population in urban regions of Germany. PARTICIPANTS: 197 participants (51% male) born in the years 1930-1932. MAIN OUTCOME MEASURES: GOHAI, OHIP-14. RESULTS: Median GOHAI score was 54; median OHIP-14 score was 2. Scores indicative of severely impaired oral health were rare. The effect of living in eastern or western Germany was of minor significance. Although the internal consistency of both measures was comparable and the same positive association with psychological wellbeing, absence of dry mouth, burning mouth, and removable dentures (p < 0.05) was observed, differences occurred. In simultaneous analysis of all items, factor analysis revealed only partial overlap of the items in extracted factors. Furthermore, the extreme score indicating no impairment was five times more frequent for OHIP-14. Of those who scored zero in OHIP-14, only 20% had the GOHAI equivalent score of 60, and for some GOHAI items the answer category for highest impairment was obtained. CONCLUSIONS: GOHAI scores for this randomly chosen non-clinical group enable comparison with scores for Germany measured in the future. The differences between GOHAI and OHIP-14 make it necessary to select the most appropriate instrument for a planned purpose and study population.
Asunto(s)
Salud Bucal , Calidad de Vida , Perfil de Impacto de Enfermedad , Anciano , Anciano de 80 o más Años , Síndrome de Boca Ardiente/epidemiología , Síndrome de Boca Ardiente/psicología , Estudios Transversales , Dentadura Parcial Removible/psicología , Dentadura Parcial Removible/estadística & datos numéricos , Femenino , Evaluación Geriátrica , Alemania/epidemiología , Humanos , Masculino , Análisis Multivariante , Reproducibilidad de los Resultados , Características de la Residencia , Muestreo , Autoinforme , Población Urbana , Xerostomía/epidemiología , Xerostomía/psicologíaRESUMEN
The aim of this investigation was to determine colour compatibility between dental shade guides, namely, VITA Classical (VC) and VITA 3D-Master (3D), and human teeth in quinquagenarians and septuagenarians. Tooth colour, described in terms of L*a*b* values of the middle third of facial tooth surface of 1391 teeth, was measured using VITA Easyshade in 195 subjects (48% female). These were compared with the colours (L*a*b* values) of the shade tabs of VC and 3D. The mean coverage error and the percentage of tooth colours being within a given colour difference (DeltaE(ab)) from the tabs of VC and 3D were calculated. For comparison, hypothetical, optimized, population-specific shade guides were additionally calculated based on discrete optimization techniques for optimizing coverage. Mean coverage error was DeltaE(ab) = 3.51 for VC and DeltaE(ab) = 2.96 for 3D. Coverage of tooth colours by the tabs of VC and 3D within DeltaE(ab) = 2 was 23% and 24%, respectively, (DeltaE(ab)
Asunto(s)
Diseño de Prótesis Dental/instrumentación , Coloración de Prótesis/instrumentación , Anciano , Algoritmos , Color , Estética Dental , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estándares de Referencia , Espectrofotometría , Diente/anatomía & histologíaRESUMEN
OBJECTIVE: To assess data on satisfaction with dental appearance in old age. DESIGN: Cross-sectional study of an elderly non-patient group born from 1930 to 1932. SETTING: Two urban regions of Germany. PARTICIPANTS: 225 subjects (73-75 years, 49.3% male). METHODS: A questionnaire was completed. Descriptive analysis and bivariate analysis of gender differences, and a regression model for multivariate analysis were performed. MAIN OUTCOMES: Satisfaction with overall dental appearance, tooth/denture colour, shape, and position, and importance of dental appearance to overall appearance. RESULTS: Importance of dental appearance to overall appearance was rated high (7.5 +/- 2.0, where 10 denotes most important), as was overall satisfaction with dental appearance (7.2 +/- 1.8, where 10 denotes best possible). Up to 12% were not at all satisfied with tooth/denture colour, shape, or position, however. Women were more critical when judging overall satisfaction with dental appearance (p = 0.02). A significant positive association was obtained between overall dental appearance and position of teeth (p < 0.001). CONCLUSIONS: Satisfaction with dental appearance was high, as was the importance of dental appearance to elderly patients. Both aesthetic and functional aspects should therefore receive special attention in dental treatment. In this context the position of teeth should be regarded as of special importance.
Asunto(s)
Estética Dental/psicología , Satisfacción Personal , Autoimagen , Anciano , Color , Estudios Transversales , Dentaduras/psicología , Femenino , Alemania , Humanos , Masculino , Análisis de Regresión , Autoevaluación (Psicología) , Encuestas y CuestionariosRESUMEN
PURPOSE: The aim of this study was to describe the oral health related quality of life (OHRQoL) of institutionalized elderly. MATERIAL: 159 elderly were randomly selected for this, study ranging in age from 61 to 98 (mean age 82.8; 19.1% male, 80.9% female). For measuring the OHRQoL the Oral Health Impact Profile (OHIP) was used. Additionally, a dental status was evaluated. RESULTS: 15% of the subjects had only natural teeth or fixed dentures, 80% removable dentures and 15% no dentures at all. OHIP-mean reached 33+/-25 points, between 0 and 112. The subcategory "functional limitation" showed the highest impairment (6.3%). The items with the highest impairment on OHRQoL in the different subcategories were: dentures not fitting properly, uncomfortable dentures, self-conscious due to teeth, avoid eating some foods, felt depressed, avoid going out and general health worsened. CONCLUSIONS: The OHIP summary score represents an overview of OHRQoL and answers detailed questions with the help of the single items. In institutionalized elderly many items showed impairment, especially in items concerning the prosthetic restorations. This demonstrates the need for dental aftercare and not only dental interventions for acute pain. Establishing aftercare and prophylaxis could increase the OHRQoL and subsequently the overall well-being.