Enhanced bone apposition to Brazilian microrough titanium surfaces

It has recently been reported that machined and microrough (micro) Brazilian titanium (Ti) implants have good production standards. The aim of this study was to evaluate in vivo bone formation around 2 different implant surfaces placed in dog's mandible. Thirty-two screw-typed Ti implants were used in this study. Mandibular premolars were extracted in 8 dogs and, after 12 weeks, 2 machined (Neodent Titamax, Brazil) and 2 micro implants (Neodent Titamax Porous, Brazil) were placed in each animal. Biopsies were taken at 3 and 8 weeks post-implantation and stained with Stevenel's blue and Alizarin red for histomorphometric measurements of bone-to-implant contact (BIC), bone area between threads (BABT) and bone area within the mirror area (BAMA). Data were analyzed statistically by two-way ANOVA (&#945;=0.05). While at 3 weeks micro implants exhibited significantly more BIC than machined ones (55 &plusmn; 12.5% and 35.6 &plusmn; 15%, p<0.05), no significant difference in such parameter was detected at 8 weeks (51.2 &plusmn; 21% and 48.6 &plusmn; 18.1%, p>0.05). There were no significant differences in BABT and BAMA between the implants. Micro surfaces promoted higher contact osteogenesis. These data indicate that this commercial micro Ti implant surface enhances contact osteogenesis at an early post-implantation period when compared to the machined one.Estudos recentes demonstram que implantes nacionais de titânio (Ti) usinados e micro-rugosos apresentam padrões adequados de produção. O objetivo deste estudo foi de avaliar a neo-formação óssea in vivo em 2 tipos diferentes de implantes colocados em mandíbulas de cães. Trinta e dois implantes rosqueáveis de Ti foram utilizados neste estudo. Os pré-molares mandibulares de 8 cães foram extraídos e, após 12 semanas, 2 implantes usinados (Neodent Titamax) e 2 implantes micro-rugosos (Neodent Titamax Porous) foram colocados em cada animal. Após 3 e 8 semanas da implantação os espécimes foram biopsiados, corados com Stevenel's blue e Alizarin red e analisados histomorfometricamente quanto à porcentagem de contato-osso-implante (COI), área de osso mineralizado entre as roscas (OMER) e área de osso mineralizado na área em espelho (OMAE). Os resultados foram analisados estatisticamente pelo teste de ANOVA a dois fatores. Os implantes micro-rugosos apresentaram maior COI do que os implantes controle em 3 semanas (55,0 &plusmn; 12,5% e 35,6 &plusmn; 15,0%; p<0,05), enquanto não houve diferença em 8 semanas (51,2 &plusmn; 21,0% e 48,6 &plusmn; 18,1%; p>0,05). Não houve diferença quanto ao OMER e OMAE. Esses dados nos indicaram que os implantes micro-rugosos utilizados neste estudo aumentam a osteogênese de contato nos períodos iniciais pós-implantação quando comparados com implantes usinados.(FAPESP) São Paulo Research Foundation(CNPq) The National Council for Scientific and Technological Developmen

Self-Medication for Toothache in Children: A Cross-Sectional Study

Objective:&nbsp;To construct, validate, and apply a questionnaire to assess and characterize the practice of self-medication performed by parents or children\u27s guardians undergoing dental care.&nbsp;Material and Methods:&nbsp;A questionnaire was constructed, validated, and applied through personal interviews in the teaching clinics of two higher education institutions in the Federal District. Absolute and relative frequencies of categorical variables were calculated using descriptive statistics. Quantitative data were presented as mean and standard deviation. The chi-square test measured the association between the studied variables and self-medication.&nbsp;Results:&nbsp;One hundred and five participants were interviewed between August 2019 and November 2020. The average age of the participants was 37 (± 9) years, and most were mothers of the children who attended (78%) and users of the public health system (94.2%). The average family income was 1.88 minimum wage, and the most prevalent educational level was complete high school (40%).&nbsp;Conclusion:&nbsp;Despite the high level of knowledge about medication safety in children, self-medication was practiced in 50% of them. Difficulty in accessing dental treatment was mentioned by most as a justification. Self-medication was associated with dental pain, continuous medication use, and family self-medication habits

Validation of an instrument for dentists’ perception of pain in patients with communication difficulties

Pain is present in the dental clinic, whether due to oral problems such as dental caries and its complications or related to dental procedures. Pain evaluation in patients with communication difficulties (PCDs) is challenging for dentists, potentially compromising treatment. The aim of this study was to develop and validate an instrument to assess the perception of dentists about pain in PCDs. This study followed a quantitative methodological approach involving constructing and validating an instrument administered to 50 dentists. The initial instrument consisted of 29 items divided into four domains. Content and construct validity and internal consistency were confirmed. Content validation was performed by judges using the Content Validity Index. The instrument underwent construct validation and internal consistency assessments through exploratory factor analysis and confirmatory factor analysis using Cronbach's α, Kaiser-Meyer-Olkin, and Bartlett's sphericity tests. The final instrument consisted of 21 items divided into three domains, with a high Cronbach's α for one domain and moderate values for the others. The total variance accounted for was above 46.03%. Each factor retained at least three items, with factor loadings greater than 0.3, commonalities greater than 0.2, and eigenvalues >1. Despite the study's limitations, the instrument demonstrated its applicability and potential in evaluating the perception and management of pain in PCDs.Faculdade de Ciências da Saúde (FS)Departamento de Odontologia (FS ODT

Self-Medication for Toothache in Children: A Cross-Sectional Study

Objective: To construct, validate, and apply a questionnaire to assess and characterize the practice of self-medication performed by parents or children's guardians undergoing dental care. Material and Methods: A questionnaire was constructed, validated, and applied through personal interviews in the teaching clinics of two higher education institutions in the Federal District. Absolute and relative frequencies of categorical variables were calculated using descriptive statistics. Quantitative data were presented as mean and standard deviation. The chi-square test measured the association between the studied variables and self-medication. Results: One hundred and five participants were interviewed between August 2019 and November 2020. The average age of the participants was 37 (± 9) years, and most were mothers of the children who attended (78%) and users of the public health system (94.2%). The average family income was 1.88 minimum wage, and the most prevalent educational level was complete high school (40%). Conclusion: Despite the high level of knowledge about medication safety in children, self-medication was practiced in 50% of them. Difficulty in accessing dental treatment was mentioned by most as a justification. Self-medication was associated with dental pain, continuous medication use, and family self-medication habits

Mandibular ameloblastoma treated by bone resection and imediate reconstruction

O ameloblastoma multicístico acomete principalmente pacientes adultos, entre a terceira e a sétima década de vida, freqüentemente na região posterior de mandíbula. A ressecção de um segmento mandibular, sem reconstrução adequada, produz grave seqüela estética e funcional levando a uma perda da qualidade de vida. O objetivo desta apresentação é mostrar que o tratamento multidisciplinar do ameloblastoma possibilita radicalidade oncológica associada à completa reconstrução da área lesada. Apresentamos um paciente de 47 anos, acometido por um ameloblastoma em região posterior de mandíbula tratado com ressecção completa de um segmento mandibular. A reconstrução no mesmo tempo operatório utilizou enxerto ósseo de crista ilíaca fixado com placas e parafusos de titânio. Após oito meses completou-se a reabilitação com implantes de elementos dentários na área do enxerto. As vantagens deste procedimento incluem a diminuição do risco de recidivas pelo uso da ressecção segmentar, reconstrução mandibular confiável e diminuição do número de procedimentos cirúrgicos, permitindo completa reabilitação em um período mais curto de tempo.Multicystic ameloblastoma mainly affects adult patients between the third and seventh decades of life, frequently in the posterior region of the mandible. The resection of a mandible segment without adequate reconstruction produces serious esthetic and functional sequelae leading to a loss of quality of life. The objective of this study is to show that multidisciplinary treatment of ameloblastomas helps in total lesion excision associated with complete reconstruction of the damaged area. We present a 47-year-old male patient with an ameloblastoma in the posterior mandible who was treated with complete resection of a mandibular segment. Reconstruction, carried out during the same surgical procedure, was performed using an iliac crest bone graft fixed with titanium plates and screws. Rehabilitation was completed eight months later with teeth implants in the grafted area. The advantages of this procedure include recurrence risk reduction due to segmental resection, reliable mandibular reconstruction and less surgical procedures, allowing full rehabilitation within a shorter period of time