ABSTRACT
Introdução: O laser em baixa intensidade tem sido indicado como tratamento coadjuvante no pós-operatório da cirurgia de extração dentária. Objetivo: O objetivo deste trabalho foi avaliar os efeitos clínicos e radiográficos do laser em baixa intensidade na cirurgia de exodontia de terceiros molares inclusos. Material e método: Oito pacientes foram submetidos à extração dos terceiros molares inferiores inclusos. O dente esquerdo foi tratado com laser durante a cirurgia e por mais dois dias do pós-operatório (Grupo Laser). A cirurgia do dente direito foi realizada após 15 dias da cirurgia do dente esquerdo e não recebeu laserterapia (Grupo Controle). A avaliação clínica do pós-operatório foi baseada na medida do edema e na análise de questionário para avaliação da dor. Após 40 dias de cada cirurgia, foram feitas radiografias periapicais digitais para medida das densidades ópticas da reparação óssea, por meio do programa Image J. Os dados obtidos na medida do edema e na análise de densidade óptica foram submetidos ao teste estatístico t de Student. Resultado: O nível de dor dos pacientes no pós-operatório foi menor no Grupo Laser em relação ao Grupo Controle. Entretanto, na medida do edema e na análise de densidade óptica das radiografias, não houve diferença estaticamente significante do Grupo Laser em relação ao Grupo Controle. Conclusão: De acordo com os parâmetros utilizados neste estudo, concluiu-se que a aplicação do laser em baixa intensidade promoveu analgesia no pós-operatório, porém não teve efeito sobre o edema e a reparação óssea.
Introduction: The low intensity laser therapy (LLLT) has been indicated as coadjuvant treatment of postoperative dental extraction surgery. Objective: The aim of this study was to evaluate the clinical and radiological findings of LLLT in the surgery for extraction of unerupted third molars. Material and method: Eight patients were submitted to extraction of mandibular third molar. The left tooth was treated with laser during surgery and for another 2 days after surgery (Laser Group). The right tooth surgery was performed after 15 days and did not receive laser therapy (control group). Clinical evaluation of the postoperative period was based on the measuring of edema and analysis of a questionnaire to assess pain. After 40 days of each surgery, digital periapical radiographs were made and measured the optical density of bone repair were analyzed using the Image J. The data obtained in the measurement of edema and analysis of optical density were tested using Student t test. Result: The level of pain in postoperative patients was lower in the laser group compared to the control group. However, in the measurement of edema and analysis of optical density of radiographs there was no statistically significant difference in the laser group compared to control. Conclusion: According to the parameters used in this study, we can concluded that the application of LLLT promoted analgesia postoperatively, but did not show effects on edema and bone repair.
Subject(s)
Postoperative Period , Surgery, Oral , Radiography, Dental, Digital , Low-Level Light Therapy , Edema , Molar, Third , Surveys and Questionnaires , Laser TherapyABSTRACT
Objective: The variety of methodologies used to investigate ovariectomized female rats shows different results,which makes a clinical application of these results difficult. The purpose of this work was to evaluate the effect ofmasticatory effort reduction and of low-calcium diet on maxillary bone turnover of ovariectomized female rats.Study Design: Eighty-four female rats were divided into four groups of 21 animals each as follows: SHAM sham-operated; OVZ ovariectomized and fed a standard commercial diet; LCD fed a low calcium diet, andGCD fed a grind commercial diet. The inferior first molars were extracted bilaterally 15 days after the ovariectomy,and the animals were euthanized 3, 5 and 8 weeks after ovaries removal. The maxillae were embedded inmethylmetacrilate. The results were submitted to analysis of variance.Results: The daily mineral apposition rate lowered with time and was not different between SHAM and OVZgroups. The trabecular bone volume of SHAM and OVZ animals was similar and decreased with time. The GCDanimals presented the lowest means and the LCD the highest in comparison to the OVZ group.Conclusion: It was concluded that ovariectomy and a low calcium diet did not cause significant maxillary boneloss in the first molar region, and even in the absence of the antagonist tooth, they did not cause maxillary boneturnover. The grind commercial diet is a good alternative for the study of maxillary bone loss in ovariectomizedfemale rats (AU)
Subject(s)
Animals , Rats , Ovariectomy , Alveolar Bone Loss/etiology , Calcium Deficiency , Models, Animal , Calcium, Dietary/pharmacokinetics , Bite ForceABSTRACT
OBJECTIVE: The variety of methodologies used to investigate ovariectomized female rats shows different results, which makes a clinical application of these results difficult. The purpose of this work was to evaluate the effect of masticatory effort reduction and of low-calcium diet on maxillary bone turnover of ovariectomized female rats. STUDY DESIGN: Eighty-four female rats were divided into four groups of 21 animals each as follows: SHAM--sham-operated; OVZ--ovariectomized and fed a standard commercial diet; LCD--fed a low calcium diet, and GCD--fed a grind commercial diet. The inferior first molars were extracted bilaterally 15 days after the ovariectomy, and the animals were euthanized 3, 5 and 8 weeks after ovaries removal. The maxillae were embedded in methylmetacrilate. The results were submitted to analysis of variance. RESULTS: The daily mineral apposition rate lowered with time and was not different between SHAM and OVZ groups. The trabecular bone volume of SHAM and OVZ animals was similar and decreased with time. The GCD animals presented the lowest means and the LCD the highest in comparison to the OVZ group. CONCLUSION: It was concluded that ovariectomy and a low calcium diet did not cause significant maxillary bone loss in the first molar region, and even in the absence of the antagonist tooth, they did not cause maxillary bone turnover. The grind commercial diet is a good alternative for the study of maxillary bone loss in ovariectomized female rats.
