Does Psychosocial Impact of Dental Aesthetics Questionnaire (PIDAQ) reflect the impact of malocclusion on facial aesthetics?

ABSTRACT Introduction: Malocclusion is presumed to have adverse effects on dental and facial attractiveness, leading to deleterious psychosocial impact and Quality of life(QoL) of the individual. The Psychosocial Impact of Dental Aesthetic Questionnaire (PIDAQ) has proved to be effective for assessment of psychosocial impact of malocclusion on dental aesthetics, but it's effectiveness for assessing facial aesthetics is unknown. Objective: The aim of the present study was to assess the effectiveness of PIDAQ on its ability to reflect the psychosocial impact of malocclusion on facial attractiveness, using the Facial Aesthetic index (FAI) after its translation and validation in the regional language. Methods: The 23-item PIDAQ, after translation process, cross-cultural adaptation and pilot testing, was administered to 330 subjects (62.5 % females and 37.5 % males; age range 18-30 years) with varying degrees of severity of malocclusion, assessed by the two components of the Index of Orthodontic Treatment Need (Dental Health Component, IOTN-DHC, for normative need; and self-administered Aesthetic Component, IOTN-AC, for subjective need) and FAI. Results: The internal consistency and test-retest reliability were good (Cronbach's alpha = 0.859 - 0.958; Intraclass correlation coefficient =0.984). FAI, IOTN-DHC and IOTN-AC scores showed highly significant correlation with PIDAQ scores, depicting strong convergent validity (p< 0.001). One-way analysis of variance (ANOVA) and Bonferroni post-hoc test showed highly significant correlations (p-value < 0.001) for all comparisons. There were no significant differences between responses of males and females. The regional version of PIDAQ had excellent reliability. Conclusions: PIDAQ showed good psychometric properties and was able to effectively reflect the psychosocial impact of malocclusion on altered facial aesthetics.

RESUMO Introdução: Acredita-se que a má oclusão tenha efeitos adversos na estética dentária e facial, levando a um impacto psicossocial e na qualidade de vida (QV) do indivíduo. O questionário PIDAQ (Psychosocial Impact of Dental Aesthetic Questionnaire) provou ser eficaz para avaliação do impacto psicossocial da má oclusão na estética dental, mas sua eficácia para avaliar a estética facial é desconhecida. Objetivo: O objetivo do presente estudo foi avaliar a eficácia do PIDAQ em refletir o impacto psicossocial da má oclusão na atratividade facial, usando o Índice de Estética Facial (FAI) após sua tradução e validação na linguagem regional. Métodos: O PIDAQ com 23 itens, após o processo de tradução, adaptação transcultural e teste piloto, foi administrado a 330 indivíduos (62,5% do sexo feminino e 37,5% do sexo masculino; faixa etária de 18 a 30 anos) com má oclusão de gravidade variada, avaliados pelos dois componentes do Índice de Necessidade de Tratamento Ortodôntico (Componente de Saúde Dentária, IOTN-DHC, para necessidade normativa; e Componente Estético auto-administrado, IOTN-AC, para necessidade subjetiva) e pelo FAI. Resultados: A consistência interna e a confiabilidade teste-reteste foram boas (alfa de Cronbach = 0,859-0,958; coeficiente de correlação intraclasse = 0,984). Os escores FAI, IOTN-DHC e IOTN-AC mostraram correlação altamente significativa com os escores do PIDAQ, representando forte validade convergente (p< 0.001). A análise de variância (ANOVA) de uma via e o teste post-hoc de Bonferroni mostraram correlações altamente significativas (p < 0,001) para todas as comparações. Não houve diferenças significativas entre as respostas de homens e mulheres. A versão regional do PIDAQ apresentou excelente confiabilidade. Conclusões: O PIDAQ mostrou boas propriedades psicométricas e foi capaz de refletir efetivamente o impacto psicossocial da má oclusão na estética facial alterada.

Prevalence and gender distribution of malocclusion among 13–15-year-old adolescents of Kerala, South India

Objectives: To determine the prevalence and gender distribution of malocclusion in 13–15-year-old adolescents of Dravidian ethnicity, residing in urban and rural areas of Kerala, South India. Materials and Methods: A total of 1554 children (779 males, 775 females), from both urban and rural areas were examined in school settings. Survey proforma for personal details and occlusal registration according to Bjork et al. (1964) were used. Chi-square test was used for analysis. Results: Overall prevalence of malocclusion was 89.9% which included Angle's Class I, Class II (17.6%) and Class III (8%) malocclusions. Other anomalies detected were increased overjet (11.8%), anterior crossbite (27.5%), anterior open bite (1.6%), posterior crossbite (5.1%), scissor bite (4.4%), midline deviation (6.8%), bimaxillary protrusion (BMP-21.3%), crowding (66.6%), spacing (15.3%), rotations (45.4%), ectopic eruptions (11.1%), peg laterals (2.4%) and missing teeth (6.6%). Males showed a higher predilection for increased overjet, deep bite, spacing and missing teeth. Class III, BMP, midline deviations and rotations were found to be more prevalent among the rural group, whereas Class II, increased overjet, deep bite and ectopic eruptions were more prevalent among the urban. Conclusion: Information regarding the detailed pattern of malocclusion prevalence and the high prevalence of BMP among South Indian population of Kerala may provide a baseline data for planning orthodontic services.

Validation of PC 1000 Hz Reaction Timer with Biopac® MP 36 for Recording Simple Reaction Time

Background: In neuropsychological assessment, the time taken by a subject or patient to respond tostimulus provides valuable information about processing in central and peripheral nervous system. Reactiontime is a simple and inexpensive method commonly used in cognitive and sport physiology to assess thesensory-motor performance of an individual.Objective: To compare and validate the baseline values of simple reaction time obtained using the PC 1000Hz reaction timer with Biopac® MP 36.Materials and Methods: 50 healthy subjects (32 males and 18 females) with age of 22.78±3.90 yrs andBMI of 24.820±3.59 kg/m2 participated. Visual (VRT) and auditory (ART) reaction time were estimated usingPC 1000 Hz reaction timer and Biopac® MP 36 separately for minimum of three trials each.Results: There was no significant difference found in ART and VRT values of the subjects estimated by PC1000 Hz and Biopac® MP 36. A strong significant (P<0.01) correlation was found in ART (r=0.92) and VRT(r=0.94) in between the devices. Bland Altman plot also showed that variations for VRT and ART were withinthe acceptable range.Conclusion: The present validation study recommend that the assessment of simple reaction time forauditory and visual stimulus by PC 1000 Hz reaction timer is reliable one and compared with other techniquesit has more advantages such as portable in nature and simplicity to use either in laboratory or in fieldoriented study for the evaluation of psychomotor and cognitive function.

Jaw ‑ winking phenomenon: Report of a case with review of literature.

Jaw‑winking or the Marcus Gunn phenomenon (MGP), a congenital uncommon condition characterized by involuntary elevation of a drooping upper eyelid concomitant with various movements of the mandible, is well‑documented in medical literature, but very little information is available in dental literature. This is an interesting case report of a 17‑year‑old female with MGP, who reported for orthodontic treatment of her proclined upper anterior teeth, severe lower crowding, and mandibular micrognathia. Review of the literature revealed only two reported cases of dental anomalies in conjunction with MGP. The patient also gave a positive family history of MGP with a maternal cousin having a similar problem. Dentists and other oral health professionals can play a significant role in detection and diagnosis of this rare condition and should take protective measures during dental and oral surgical procedures.