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Doctoral Thesis
DOI
https://doi.org/10.11606/T.42.2010.tde-20052010-135831
Document
Author
Full name
Milene Camargo Regatão
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2010
Supervisor
Committee
Baldo, Marcus Vinicius Chrysostomo (President)
Bauer, Jarbas Arruda
Borsatti, Maria Aparecida
Claessens, Peter Maurice Erna
Valle, Luiz Eduardo Ribeiro do
Title in Portuguese
Estudo topográfico da dor de origem dentária
Keywords in Portuguese
Diagnóstico bucal
Dor facial
Dor referida
Fisiologia do sistema nervoso
Odontalgia
Abstract in Portuguese
A maioria dos pacientes que têm dor de origem dentária pulpar ou periapical tem dor referida, e algumas características da dor parecem influenciar este fenômeno. Por meio do preenchimento de fichas clínicas, com informações sobre as características da dor, investigamos, em 60 voluntários, a distribuição topográfica de áreas de dor referida de origem dentária. Por meio de métodos psicofísicos, comparamos a resolução espacial da dor com a resolução espacial de outras modalidades somestésicas (mecânica e térmica). Nossos resultados indicam que a intensidade da dor favorece o fenômeno da dor referida e interfere na sua dispersão topográfica. Dentes algógenos com polpa viva influenciam um maior espalhamento da dor. A organização hodológica do núcleo espinal do trigêmeo e mecanismos fisiológicos de integração neural podem explicar de maneira satisfatória várias características da dor referida. Além disso, observamos que a resolução espacial na localização da dor é maior que a resolução espacial da localização de outros estímulos somestésicos nos elementos dentários.
Title in English
Study of refered pain of dental origin
Keywords in English
Endodontic diagnostic
Pain
Referred pain
Toothache
Trigeminal system
Abstract in English
The majority of patients who suffer from toothache report referred pain to other sites in the head and neck. Thus, the aim of this study was to investigate the clinical and psychophysical characteristics of referred pain in the orofacial region and how factors such as intensity, duration and nature of odontogenic pain might modulate them. We employed psychophysical and clinical methods to correlate pain perception with the anatomy and physiology of the trigeminal system. Sixty patients reporting primary toothache were investigated as to the clinical and psychophysical aspects of their pains symptoms and signals (intensity, duration, location and state of the pulp inflammatory process). Pain intensity and state of irreversible pulp inflammation were found to significantly affect facilitate the incidence of referred pain and its spread across vertical laminations. Considering these results, we proposed a physiological model based on both neuronal integration (spatial and temporal summation) and the topographic organization of the trigeminal system, which is able to explain the observed characteristics of referred dental pain.
 
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Publishing Date
2010-06-07
 
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