JUSTIFICATIVA E OBJETIVOS: A disestesia oclusal, também chamada de síndrome da mordida fantasma, é caracterizada por discrepâncias oclusais persistentes e não verificáveis clinicamente. Em 1976 a literatura relatou os dois primeiros casos, porém a abordagem do tratamento tem sido baseada apenas no conhecimento incompleto da etiologia, em que nenhuma das teorias propostas é totalmente explicada em todos os casos disponíveis. O objetivo desta revisão é mostrar as hipóteses sobre a etiologia, diagnóstico e tratamento da disestesia oclusal. MÉTODOS: A revisão da literatura pesquisou as seguintes bases de dados: NCBI/PubMed (National Center for Biotechnology Information) e Scielo (Scientific Electronic Library Online). Na estratégia de busca foram utilizados os seguintes descritores: Disestesia oclusal OR mordida fantasma AND Distúrbios da articulação temporomandibular em português e inglês. Foram encontrados um total de 166 artigos, destes 18 atenderam os critérios de elegibilidade. RESULTADOS: Etiologicamente a disestesia oclusal pode relacionar-se com desordens psiquiátricas, fenômeno do membro fantasma e alterações do input proprioceptivo.  O critério diagnóstico propõe avaliar as queixas de mordida desconfortável por mais de 6 meses, sensação de desconforto ao morder, ausência de discrepância oclusal, sofrimento emocional associado, falhas em vários procedimentos odontológicos. Dentre diversas modalidades de tratamentos, a terapia mais aceita é a medicamentosa com uso de antidepressivos como o milnaciprano. CONCLUSÃO: Em pacientes com queixas oclusais persistentes, o diagnóstico deve considerar a disestesia oclusal. A abordagem terapêutica deve ser realizada por uma equipe interdisciplinar, que inclui além do cirurgião dentista, psiquiatras e psicólogos ​​com experiência nesta área.

BACKGROUND AND OBJECTIVES: Occlusal dysesthesia, also called phantom bite syndrome, is characterized by persistent and clinically unverifiable occlusal discrepancies. In 1976, the literature reported the first two cases, but the treatment approach has been based only on incomplete knowledge of the etiology, in which none of the proposed theories is fully explained in all available cases. The objective of this review is to show hypotheses about the etiology, diagnosis and treatment of occlusal dysesthesia. METHODS: A literature search was performed in the following databases: NCBI/PubMed (National Center for Biotechnology Information) and Scielo (Scientific Electronic Library Online). The following descriptors were used in the search strategy: occlusal dysesthesia OR phantom bite AND temporomandibular joint disorders in Portuguese and English. A total of 166 articles were found, of which 18 met the eligibility criteria. RESULTS: Etiologically, occlusal dysesthesia may be related to psychiatric disorders, phantom limb phenomenon and changes in proprioceptive input. The diagnostic criteria propose to evaluate the complaints of uncomfortable bite for more than 6 months, feeling of discomfort when biting, absence of occlusal discrepancy, associated emotional suffering, and failures in several dental procedures. Among several treatment modalities, the most accepted therapy is medication with the use of antidepressants such as milnacipran. CONCLUSION: In patients with persistent occlusal complaints, the diagnosis should consider occlusal dysesthesia. The therapeutic approach must be carried out by an interdisciplinary team, which includes, in addition to the dental surgeon, psychiatrists and psychologists with experience in this area.

Resumo Para comemorar o cinquentenário da Revista Brasileira de Saúde Ocupacional (RBSO), foi realizado, em fevereiro de 2024, o evento “50 anos da RBSO, 25 anos do SciELO e 38 anos da ABEC Brasil: contribuições para a ciência aberta”. Esta nota editorial reporta tal evento, descrevendo brevemente o histórico da revista e das entidades representadas: o projeto Scientific Electronic Library Online (SciELO) e a Associação Brasileira de Editores Científicos (Abec Brasil), assim como seus alcances, seus desafios e suas perspectivas. A ciência aberta foi escolhida como assunto para estimular o debate, por ser um tema relevante e transversal que perpassa as atividades da revista e das entidades. A RBSO segue os princípios do acesso aberto desde sua criação, ainda antes do surgimento do movimento do acesso aberto e do debate em torno da ciência aberta. Mais recentemente, aderiu a outras práticas da ciência aberta, como a aceitação de preprints, o incentivo ao depósito de dados de pesquisa e a adoção de políticas editoriais alinhadas. SciELO e Abec Brasil têm sido importantes catalisadores das iniciativas relacionadas à ciência aberta, visando fortalecer os periódicos e ampliar as colaborações científicas e o compartilhamento do conhecimento científico em benefício da ciência e da sociedade. , (RBSO) realizado 2024 50 “5 2 3 . aberta” representadas (SciELO Brasil, Brasil) alcances perspectivas criação recentemente preprints alinhadas sociedade (RBSO 202 5 “ 20

Abstract As part of the celebration activities for the fiftieth anniversary of the Brazilian Journal of Occupational Health (RBSO), the event “50 years of RBSO, 25 years of SciELO, and 38 years of ABEC Brasil: contributions to open science” was held in February 2024. This editorial note reports on that event, briefly describing the history of the journal and the entities represented: the Scientific Electronic Library Online (SciELO) project and the Brazilian Association of Scientific Editors (ABEC Brasil), as well as their scopes, challenges, and prospects. Open Science was chosen as the theme to stimulate debate, as it is a relevant and cross-cutting issue that permeates the activities of the journal and the organizations. RBSO has followed the open access principles since its inception, even before the emergence of the open access movement and the debate around open science. More recently, it has adopted other open science practices such as accepting preprints, encouraging research data deposition, and adopting aligned editorial policies. SciELO and ABEC Brasil have been important catalysts for initiatives related to open science, aiming not only to strengthen journals but also to expand scientific collaborations and the sharing of scientific knowledge for the benefit of science and society. , (RBSO) 50 “5 2 3 2024 represented (SciELO Brasil, Brasil) scopes challenges prospects crosscutting cross cutting organizations inception recently preprints deposition policies society (RBSO 5 “ 202 20

Abstract Background Local anesthetic puncture is often related to the experience of pain. This study aimed to systematically analyze the literature on changes in pain perception during the anesthetic puncture of dental local anesthesia after Photobiomodulation Therapy (PBMT). Material and methods An electronic search was performed in eight primary databases (Embase, LILACS, BBO, LIVIVO, MedLine via PubMed, SciELO, Scopus, and Web of Science) and three additional ones (EASY, Google Scholar, and OATD) to partially capture the “gray literature”. The PICO strategy was used to identify randomized clinical trials evaluating the analgesic effect of PBMT in the anesthetic puncture site of dental local anesthesia compared to placebo or control groups, without restrictions on publication language and year. Two reviewers extracted the data and assessed the individual risk of bias of the eligible studies using the Cochrane Collaboration Risk of Bias Tool version 2.0. Results The electronic search found 3,485 records, of which eight met the eligibility criteria and were included in the qualitative synthesis. The studies were published from 2011 to 2022. None of the included studies had a low risk of bias. PBMT groups showed no significant difference in pain scores compared to placebo and control groups of most studies. Conclusion Based on a low to very low certainty of evidence, PBMT seems to have no effect on pain perception during anesthetic puncture in patients undergoing dental local anesthesia. PBMT. . (PBMT) Embase, Embase (Embase LILACS BBO LIVIVO PubMed SciELO Scopus Science EASY, EASY (EASY Scholar OATD gray literature. literature” year 20 2 0 2.0 3485 3 485 3,48 records synthesis 201 2022 evidence (PBMT 2. 348 48 3,4 202 34 4 3,

Abstract This observational, cross-sectional study with retrospective collection was aimed to evaluate the prevalence of morphological changes in mandibular condyles in individuals with class II malocclusion, classified according to different vertical growth patterns (brachyfacial, mesofacial, and dolichofacial), through cone beam computed tomography (CBCT). Seventy CBCT images (140 mandibular condyles) were selected from individuals without orthodontic treatment, of both sexes, aged between 25 and 50 years. No statistically significant differences were found between facial patterns; however, there was a higher relative prevalence of bone changes in dolichofacial individuals with flattening (62%), sclerosis (44%), and subchondral bone cyst (20%). Erosion and osteophytes prevailed in mesofacial (39%), and brachyfacial individuals (32%), respectively. Thus, there was no statistically significant difference in the prevalence of degenerative changes between the vertical skeletal patterns. Flattening was the most prevalent change, whereas subchondral bone cyst was the least prevalent among the three groups studied. The observational design of this study makes it possible to analyze image banks to verify the correlation of morphological changes in the temporomandibular joint in different facial patterns in patients with class II malocclusion. A limitation of the study is that clinical characteristics were not evaluated. crosssectional cross sectional malocclusion brachyfacial, (brachyfacial dolichofacial, , dolichofacial) CBCT. . (CBCT) 140 (14 treatment sexes 2 5 years however 62%, 62 62% (62%) 44%, 44 44% (44%) 20%. 20 20% (20%) 39%, 39 39% (39%) 32%, 32 32% (32%) respectively Thus change studied evaluated (CBCT 14 (1 6 (62% 4 (44% (20% 3 (39% (32% 1 ( (62 (44 (20 (39 (32 (6 (4 (2 (3

ABSTRACT Purpose: To evaluate the influence of patients’ serum vitamin D levels on muscle strength characteristics and whether it impacts the durability of botulinum toxin (BT) treatment. Methods: The muscle strength of the frontal and corrugator muscles was evaluated before and after the application of TB with pre- and post-application control measurements, and at weeks 2, 5 and 12. The effect of vitamin D on muscle strength and its interaction with BT were investigated in 20 patients. The muscle contraction force was measured by surface electromyography. Results: The results revealed statistically significant differences between the frontal measurement groups at weeks 2 and 5, as well as for the corrugator in the same weeks and at week 12. Regarding vitamin D, significant differences were observed only in the initial group with vitamin D > 30 ng/mL compared to < 30 ng/mL for the frontal muscles. Patients with higher levels of vitamin D had higher average muscle strength compared to those with lower levels in all evaluations. Conclusions: It was observed that vitamin D influences muscle strength and the necessary dosage of BT. Purpose patients (BT treatment Methods pre postapplication post measurements 12 electromyography Results 3 ngmL ng mL evaluations Conclusions 1

RESUMO JUSTIFICATIVA E OBJETIVOS: Desde a descoberta relativamente recente do sistema endocanabinoide (SEC) e seu papel fundamental da regulação de outros sistemas, o assunto tem despertado interesse de todas as áreas da saúde, incluindo-se a Odontologia. Dentre as possíveis utilizações e benefícios dos canabinoides, está sua atuação na dor e seus fatores predisponentes ou perpetuadores, como o bruxismo e os distúrbios do sono. Embora a literatura seja ainda escassa, os mecanismos de ação e resultados satisfatórios dos canabinoides e demais derivados da cannabis nessas situações já permitem sua prescrição com segurança. O objetivo deste estudo foi verificar as atuais evidências sobre a utilização de derivados da cannabis nas dores orofaciais (DOFs), revisando o que se sabe, até o momento, sobre o SEC e as perspectivas de sua utilização com respaldo e critério. CONTEÚDO: Esta pesquisa realizou uma breve revisão da história da planta cannabis, abordando temas como preconceito, proibições e interesses, além de sua utilização terapêutica. Em seguida, foi apresentada uma revisão sobre o SEC e seus mecanismos de interesse na DOF. Na sequência, foram discutidos os produtos derivados da planta e seus efeitos, indicações, contraindicações, efeitos adversos, interações farmacológicas, peculiaridades e perspectivas. CONCLUSÃO: Quanto mais são adquiridos conhecimentos sobre o SEC e os benefícios terapêuticos dos componentes e derivados da cannabis, mais há um convencimento de que surgiu, de fato, uma nova fronteira terapêutica. O número crescente de bons desfechos, incluindo casos de DOF, obtidos através de estudos bem conduzidos, traz um misto de satisfação e empolgação. Nenhuma terapia obterá bons resultados se não partir de um diagnóstico preciso. Assim, é de suma importância que se conheça o SEC, os produtos e derivados da planta, os canabinoides sintéticos, suas indicações e efeitos. Novos estudos são necessários e, nesse momento, pode-se afirmar que as perspectivas são muito boas e um novo e desafiador horizonte está despontando. OBJETIVOS (SEC sistemas saúde incluindose Odontologia perpetuadores sono escassa segurança DOFs, DOFs , (DOFs) sabe momento critério CONTEÚDO preconceito interesses terapêutica seguida DOF sequência contraindicações adversos farmacológicas CONCLUSÃO surgiu fato desfechos conduzidos empolgação preciso Assim sintéticos podese pode despontando (DOFs

ABSTRACT BACKGROUND AND OBJECTIVES: Since the relatively recent discovery of the endocannabinoid system (ECS) and its fundamental role in regulating other systems, the subject has aroused interest in all areas of health, including Dentistry. Among the possible uses and benefits of cannabinoids are their performance in pain and its predisposing or perpetuating factors, such as bruxism and sleep disorders. Although the literature is still scarce, the mechanisms of action and satisfactory results of cannabinoids and other cannabis derivatives in these situations already allow their safe prescription. The objective of this study was to verify the current evidence on the use of cannabis derivatives in orofacial pain (OFP), reviewing what is known, to date, about the ECS and the prospects for its use with support and criteria. CONTENTS: This research carried out a brief review of the cannabis plant history, addressing issues such as prejudice, prohibitions and interests, as well as its therapeutic use. Then, a review on ECS and its mechanisms of interest in OFP was presented. Next, the products derived from the plant and their effects, indications, contraindications, adverse effects, drug interactions, peculiarities and perspectives were discussed. CONCLUSION: The more knowledge is gained about the ECS and the therapeutic benefits of cannabis components and derivatives, the greater the conviction that a new therapeutic frontier has indeed emerged. The growing number of good outcomes, including cases of OFP, obtained through well-conducted studies, brings a mixture of satisfaction and excitement. No therapy will achieve good results if it does not start from an accurate diagnosis. Thus, it is of the utmost importance to know the ECS, the products and derivatives of the plant, the synthetic cannabinoids, their indications and effects. New studies are necessary and, at this moment, it can be said that the perspectives are very good and a new and challenging horizon is emerging. OBJECTIVES (ECS systems health Dentistry factors disorders scarce prescription , (OFP) known date criteria CONTENTS history prejudice interests Then presented Next effects contraindications interactions discussed CONCLUSION emerged outcomes wellconducted conducted excitement diagnosis Thus moment emerging (OFP

Abstract Lipolytic substance injections to reduce localized fat have been extensively used because it is a low-invasive method. This review aimed to evaluate the efficacy and safety of deoxycholic acid in submental fat reduction compared to a placebo and investigate the potential industry sponsorship bias in the results of randomized clinical trials on this topic. Ten electronic databases were extensively searched for randomized clinical trials without restriction on language and year of publication. Two reviewers extracted the data and assessed the individual risk of bias in the studies with the RoB 2.0 tool. The industry sponsorship bias was evaluated according to citations in the articles regarding industry funding/sponsorship throughout the texts. Fixed and random effects meta-analyses were performed, and the results were reported in Risk Ratio (RR) at a 95% Confidence Interval (95% CI). The initial search provided 5756 results, of which only five were included. Only two studies had a low risk of bias. All studies showed a potential industry bias. The meta-analysis showed that patients treated with deoxycholic acid had significant positive results for all efficacy outcomes and a higher risk of fibrosis, pain, erythema, numbness, swelling, edema, pruritus, nodules, headache, and paresthesia. The low to moderate certainty of evidence found allows concluding that deoxycholic acid is effective in submental fat reduction, causing well-tolerated adverse effects. However, all eligible studies showed a potential industry bias. lowinvasive invasive method topic publication 20 2 0 2. tool fundingsponsorship funding texts metaanalyses meta analyses performed RR (RR 95 (95 CI. CI . CI) 575 included metaanalysis analysis fibrosis pain erythema numbness swelling edema pruritus nodules headache paresthesia welltolerated well tolerated However 9 (9 57 ( 5

Abstract Objective: To assess the influence of the COVID-19 pandemic on levels of anxiety, stress, and orofacial pain in individuals with and without TMD. Material and Methods: In this cross-sectional study, the participants were divided into two groups (n=10, each) experimental group (EG) TMD patients and control group (CG), without TMD. The presence of TMD was confirmed using the RDC/TMD. The Beck Anxiety Scale (BAI), Perceived Stress Scale (PSS), and Oral Analog Scale were used for assessment. The Beck Anxiety Scale is composed of 21 multiple-choice questions describing symptoms of anxiety, while the PSS is a measure that evaluates life situations as stressful. An Oral Analogue Scale was applied to each individual to quantify orofacial pain, with 0 (zero) without pain and 10 (ten) being the worst pain ever felt. The comparison between groups was performed using the Mann-Whitney test. Logistic regression was used to verify TMD dependence in relation to BAI and PSS-10. Quantitative variables were correlated with each other by Pearson's correlation coefficient. The level of significance considered for all tests was 5%. Results: The association was statistically significant (p≤0.05) for BAI and PSS with a TMD. Conclusion: Although the COVID 19 pandemic has had a psychological impact on the general population, patients with TMD have higher levels of anxiety and stress than the control group.

This study aimed to systematically review the literature to assess the effect of preemptive intravenous ibuprofen on pain reduction after lower third molar surgery. Nine databases (PubMed, Scopus, LILACS, SciELO, Embase, Web of Science, Cochrane, Open Gray, and Open Thesis) were used as sources of research, including “grey literature.” The protocol was registered in PROSPERO. Only randomized clinical trials evaluating the effects of preemptive intravenous ibuprofen on pain during and immediately after the extraction of lower third molars were included, without restrictions of year and language. Two reviewers independently performed the study selection, data extraction, and assessment of the risk of bias. The “Joanna Briggs Institute for Randomized Controlled Trials” tool was used to assess the risk of bias. Each study was categorized according to the percentage of positive responses to the questions corresponding to the assessment instrument. The results were measured narratively/descriptively. The initial search resulted in 3,257 records, of which only three studies (n=150 participants) met the eligibility criteria and were included in the qualitative analysis. All studies were published in 2019. The risk of bias ranged from low to moderate. Two studies found significant pain reduction within 48 h after the procedure. In conclusion, the use of preemptive intravenous ibuprofen for extracting third molars reduces pain and analgesic consumption after the surgical procedure.

Abstract This in vitro study evaluated the biocompatibility and abrasivity of whitening and conventional toothpastes. Samples of conventional (non-whitening) - Edel White Infant (EWI) - and whitening toothpastes - Edel White Whitening (EWW), Edel White CAREFORTE (EWC), Colgate Total 12 Ò Professional (C), and Oral-B Whitening (OB) - were dissolved in culture medium (0.2 g sample weight per mL). Human gingival fibroblasts (hGF) were placed in contact with different dilutions of culture media that had been previously exposed to these toothpastes. Cytotoxicity was then assessed using the methyl tetrazolium test (MTT) and the cell survival rate was determined. Genotoxicity was assessed by the micronucleus test (MNT) and the number of micronuclei was determined before and after exposure to the toothpaste solutions. The enamel surface roughness was evaluated in specimens of bovine teeth (n = 10 per group) before and after 10,000 brushing cycles, using the investigated toothpastes. The results were statistically analyzed using the Mann-Whitney U test and two-way ANOVA (p < 0.05). According to the MTT assay, EWW and OB presented significant cytotoxicity (p < 0.01), but no genotoxic (MNT) effects (p > 0.05). C toothpaste was statistically significantly abrasive to the enamel surface (p < 0.01). The findings of this study may be helpful for individualized selection of commercial toothpastes, as some whitening toothpastes present significant cytotoxicity and conventional toothpaste cause significant surface changes.

Abstract This editorial addresses the history of Brazilian Oral Research (BOR), official journal of the Brazilian Division of the International Association of Dental Research (SBPqO). BOR is increasingly consolidating itself as the most important journal in Brazilian dental research. However, much still needs to be done. The hard and continuous work to improve the journal will guarantee its permanent growth and result in new achievements for the benefit of the entire dental scientific community.

Introduction: The world health organization in March 2020, considered about coronavirus infection, a public health emergency and in April recognized it as a pandemic. COVID-19 is highly infectious, with transmission mainly through saliva droplets and contaminated surfaces. Because there is no vaccine or effective treatment, the best way to prevent infection is through social distance and the use of masks. Quarantine has been used as a public health measure to contain or minimize the spread of coronavirus in several countries, demonstrating a positive role in the prevention and control of the epidemic. However, the negative psychological impact was observed in the general population. Psychosocial factors contribute to the establishment of some diseases, such as temporomandibular disorders (TMD), which have a complex and multifactorial etiology. Among TMD risk factors, biopsychosocial factors must be considered both in the etiology and in the triggering of signs and symptoms. Thus, our objective was to assess the influence of the COVID-19 pandemic on levels of anxiety, stress and orofacial pain in desire with and without TMD. Methods: Research participants were divided into two groups: experimental group (EG) patients with TMD and control group (CG), without TMD. The Beck Anxiety Scale (BAI), Perceived Stress Scale (PSS) and Oral Analog Scale were used in this study. Results: The association between variables analyzed using Pearson's correlation was statistically significant (p-value ≤ α) for BAI and PSS with a TMD. Conclusion: Although the COVID 19 pandemic has had a psychological impact on the general population, patients with TMD have higher levels of anxiety and stress than the control group.

Introdução: A organização mundial de saúde em março de 2020 considerou o surto de infecção pelo coronavirus uma emergência de saúde pública e em abril reconheceu ser uma pandemia. A COVID-19 é altamente infecciosa, com transmissão principalmente por gotículas de saliva e por superfícies contaminadas. Por não ter vacina e nem tratamento eficaz a melhor forma de prevenir a infecção é pelo distanciamento social e uso de máscaras. A quarentena tem sido usada como uma medida de saúde pública para conter ou minimizar o surto de coronavirus em vários países, demonstrando um papel positivo na prevenção e controle da epidemia. Contudo o impacto psicológico negativo foi observado na população em geral. Os fatores psicossociais contribuem para o estabelecimento de algumas doenças como a disfunções temporomandibulares que possui uma etiologia complexa e multifatorial. Dentre os fatores de risco de DTM, os biopsicossociais devem ser considerados tanto na etiologia como no desencadeamento dos sinais e sintomas. Com isso, nosso objetivo foi avaliar a influência da pandemia por COVID-19 nos níveis de ansiedade, estresse e dor orofacial em indivíduos com e sem DTM. Métodos: Os participantes da pesquisa foram divididos em dois grupos: grupo experimental (GE) pacientes com DTM e grupo controle (GC) indivíduos sem DTM. A Escala de Ansiedade de Beck (BAI), Escala de Estresse percebido (PSS) e Escala Analógica Oral foram utilizadas nesse estudo. Resultados: A associação entre variáveis analisada por meio da correlação de Pearson foi estatisticamente significativa (p-value ≤ α) para do BAI e PSS com a DTM. Conclusão: Apesar da Pandemia do COVID 19 ter gerado impacto psicológico na população em geral, os pacientes com DTM apresentaram níveis de ansiedade e estresse maiores que o grupo controle.

Resumo Introdução A Punica granatum L. (PG), utilizada como medicamento fitoterápico, apresenta propriedades terapêuticas, anti-inflamatórias e antioxidante. Embora diversos estudos já tenham sido realizados com este fitoterápico, seus possíveis efeitos citotóxicos nos tecidos humanos ainda não são claros. Objetivo Avaliar a citotoxicidade da PG por meio de cultura celular com duas linhagens: fibroblastos humanos de mucosa oral (FLM) e células de carcinoma epidermoide oral humano (KB). Material e método As células foram submetidas ao teste de viabilidade celular por 24 horas nas concentrações da PG 1%, 0,50%, 0,25%, 0,125%, 0,062% e 0,031%, e aos testes de citotoxicidade celular em 4 horas, 1, 3, 5 e 7 dias, em diferentes concentrações, realizados em triplicata. Foi utilizado um controle negativo (Triton 1%) e um controle positivo sem o extrato de PG. Os dados obtidos foram submetidos à ANOVA (p < 0,05). Resultado Foi possível observar que o extrato da PG possui efeitos inibitórios, apresentando-se maior nas células KB em relação às FLM. Os testes de citotoxicidade e viabilidade mostraram inibição e morte das células KB e FLM nas concentrações 1%, 0,50% e 0,25%. Conclusão O efeito inibitório da PG foi dose-dependentes, mostrando-se maior nas células KB em relação às FLM.

Abstract Introduction Punica granatum L. (PG), used as a herbal medicine, has therapeutic, anti-inflammatory and antioxidant properties, although several studies have already been carried out with this herbal medicine, its possible cytotoxic effects on human tissues are still unclear. Objective To evaluate the cytotoxicity of PG through cell culture with two strains: human oral mucosa fibroblasts (LFM) and human oral squamous cell carcinoma (KB) cells. Material and method The cells were submitted to the cell viability test for 24 hours in the concentrations of PG 1%, 0.50%, 0.25%, 0.125%, 0.062% and 0.031% and the cell cytotoxicity tests in 4 hours, 1, 3, 5 and 7 days in different concentrations, performed in triplicate. A negative control (Triton 1%) and a positive control without the PG extract were used. The data obtained were submitted to ANOVA (p <0.05). Result it was possible to observe that the PG extract has inhibitory effects, being higher in KB cells in relation to LFM. The cytotoxicity and viability tests showed inhibition and death of KB and FLM cells at concentrations of 1%, 0.50% and 0.25%. Conclusion The inhibitory effect of PG was dose dependent, showing itself to be greater in KB cells compared to LMB.