Autotransplantation for Restoration of Dentition Defects After Excision of Jaw Cysts.

Bone defect caused by jaw cystectomy has always been the main factor affecting postoperative wound healing and is also the common cause of maxillofacial bone defect, which brings challenges to the subsequent restoration of missing teeth. In this paper, the authors report a 22-year-old young woman who had a mandibular cyst in the left lower posterior tooth area. She underwent mandibular bone cyst excision and simultaneous extraction of teeth 36 and 37. One and two months after the removal of the mandibular bone cyst, autologous tooth transplantation was performed in stages from tooth 28 to tooth 36 and from tooth 18 to tooth 37. The case shows that tooth autotransplantation is a viable option for the restoration of dentition defects after the excision of jaw cysts, which can promote the healing of the bone defect after the operation.

Age estimation through the development of third molars in a case of multiple dismemberment / Estimación de la edad mediante el desarrollo de terceros molares en un caso de desmembramiento múltiple

El crimen organizado se ha convertido en un flagelo a nivel internacional conformado por grupos al margen de la ley que realizan todo tipo de actividades que involucran desde tráfico de personas, secuestros, extorsiones, narcotráfico y muchos otros delitos. Producto de este fenómeno, la desaparición y ejecución de personas es cada día más frecuente, en muchos casos los cuerpos son quemados o desmembrados para impedir o hacer más difícil la identificación. La odontología forense se ha convertido en una disciplina transcendental en la identificación de cadáveres y restos óseos, además de contar con múltiples métodos para estimar la edad aproximada de una persona. Se presenta el caso de un descuartizamiento múltiple de tres individuos masculinos donde era indispensable identificar si alguno correspondía a una persona menor de 18 años.

Organized crime has become an international scourge made up of outlaw groups that carry out all kinds of activities ranging from human trafficking, kidnapping, extortion, drug trafficking and many more. As a result of this phenomenon, the disappearance and execution of people is becoming more frequent every day, in many cases the bodies are burned or dismembered to prevent or make identification more difficult. Forensic odontology has become a transcendental discipline in the identification of corpses and skeletal remains, in addition to having multiple methods to estimate the approximate age of a person. The case of a multiple dismemberment of three male individuals is presented, where it was essential to identify a person under 18 years of age.

Duración de la erupción dental prefuncional temporal y permanente en la población de Villa Clara / Duration of temporary and permanent prefunctional tooth eruption in Villa Clara population

Introducción: En Cuba ha sido poco estudiado el tiempo que demora el diente, desde que aflora a la cavidad bucal hasta que alcanza el plano oclusal. Objetivo: Determinar la duración de la erupción clínica prefuncional temporal y permanente en la población de Villa Clara. Métodos: Se realizó un estudio epidemiológico descriptivo entre los años 2014 a 2018. Mediante un muestreo polietápico aleatorio simple se obtuvo una muestra de 2 584 niños y adolescentes (520 entre tres meses y cuatro años para la dentición temporal, y 2 064 entre cuatro y 14 años para la permanente), nacidos en la provincia, sin alteraciones del crecimiento general y craneofacial; se observó el brote; se calcularon por medio de la regresión de probit, las edades medias para los dientes brotados sin contacto oclusal y las que habían alcanzado la oclusión. La duración de la erupción clínica prefuncional fue calculada restando las medianas de ambas variables. Resultados: En los dientes temporales demoró más la erupción clínica prefuncional en los 1ros molares (superiores, 0,63; inferiores, 0,62); en los permanentes, en los incisivos centrales inferiores de hombres y mujeres, 1 y 1,07, respectivamente. Conclusiones: La erupción clínica prefuncional para los dientes permanentes osciló entre cuatro meses y un año; para los temporales, entre cuatro y siete meses con diferencias dentarias. Se elaboró una tabla de duración de la erupción clínica prefuncional de los dientes temporales y permanentes ajustada a la población villaclareña.

Introduction: the time the tooth takes to emerge from the oral cavity until it reaches the occlusal plane has been little studied in Cuba. Objective: to determine the duration of temporary and permanent prefunctional clinical tooth eruption in Villa Clara population. Methods: a descriptive and epidemiological study was carried out from 2014 to 2018. A sample of 2,584 children and adolescents who were born in the province without alterations in general and craniofacial growth was obtained through simple random multistage sampling (520 between three months and four years for temporary dentition and 2,064 between four and 14 years for permanent one); the outbreak was observed; the mean ages for teeth eruption without occlusal contact and those that had reached occlusion were calculated by means of probit regression. The duration of the prefunctional clinical eruption was calculated by subtracting the medians of both variables. Results: prefunctional clinical eruption took longer in temporary (upper, 0.63 and lower, 0.62) 1st molars, as well as in permanent lower central incisors of men and women (1 and 1.07, respectively). Conclusions: prefunctional clinical eruption for permanent teeth ranged from four months to one year and for temporary ones between four and seven months presenting dental differences. A table of the duration of the prefunctional clinical eruption of temporary and permanent teeth was created according to Villa Clara population.

A Periodontal Perspective on the Successful Treatment of Recurrent Benign Gingival Lesions Affecting the Anterior Dentition: Two Case Reports.

Recurrent benign gingival lesions occurring in the anterior dentition are clinical dilemmas. While complete removal of such lesions is required to prevent recurrence, this can result in a poor esthetic outcome. Relative to this conundrum, this report discusses the diagnosis, psychologic management, and clinical treatment of two patients with recurring lesions on the facial gingiva of the mandibular and maxillary incisors, respectively. Patient A, a 55-year-old woman, presented with a recurrent peripheral ossifying fibroma (POF); Patient B, a 76-year-old man, presented with a recurrent pyogenic granuloma (PG). Both patients underwent multiple procedures and were ultimately treated without lesion recurrence. The efficacious surgical treatment of recurrent gingival lesions like POF and PG requires an aggressive approach involving lesion removal of the lesion as well as a 1.0- to 2.0-mm margin of normal tissue, underlying alveolar bone, and associated periodontal ligament (PDL). The rationale for this approach stresses the potential periodontal and esthetic ramifications that were considered. In summary, when recurrent benign gingival lesions are localized to the anterior part of the mouth, the approach to their surgical removal should be modified to minimize the extent of gingival recession and other potential esthetic issues.

Exposure to household dysfunction at childhood and later number of teeth among older Japanese adults: A life course study from the Japan Gerontological Evaluation Study.

OBJECTIVES: The aim of this retrospective cohort study was to investigate the life course association between exposure to two household dysfunctions (father violence against mother and parental divorce) at childhood (≤18 years) with later number of remaining teeth (≥65 years) in functionally independent older Japanese population. This was the first study to investigate this research question in the Asian context. METHODS: The Japan Gerontological Evaluation study (JAGES) self-reported retrospective data gathered in 2013 was used (n = 21,604). Each household dysfunction was binary variable (Yes/No), while the five categories of the number of remaining teeth were ≥20, 10-19, 5-9, 1-4, and no teeth. Sex-stratified ordered logistic regression models were used to calculate the odds ratios (OR) of having fewer teeth. The models were adjusted for age, economic adversity in childhood, educational attainment, comorbidities, and smoking status. RESULTS: Overall, 46.4% were men and a total of 1149 participants (5.3%) experienced household dysfunction at childhood [men = 642 (6.4%), women = 507 (4.4%)]. The regression models showed higher OR of having fewer teeth among men who experienced a household dysfunction [OR = 1.16; 95% Confidence interval (CI) = 1.00-1.36] than men who did not. This association was not observed among women [OR = 0.94; 95% CI = 0.79-1.13]. Similar magnitude and direction of the association was observed among men but not among women when the two components of household dysfunction were used separately and aggregately as exposure variables. CONCLUSION: An exposure to a household dysfunction at childhood was associated with having fewer teeth in later life among men but not among women.

A dentição do idoso e as implicações alimentares / The dentition of the elderly and the food implications / La dentición de los ancianos y las implicaciones alimentarias

O envelhecimento acarreta mudanças em todos os aspectos da vida, sendo caracterizado por uma modificação nas funções sociais, mentais e corporais. No Sistema Estomatoglossognático, é possível observar alterações significativas, começando pela fase preparatória da deglutição e da função de mastigação, decorrente da perda dos dentes, a qual é responsável pela trituração do alimento, formação do bolo alimentar e perda do tônus dos músculos que são responsáveis pelos movimentos mastigatórios. Esta pesquisa observou como as alterações dentárias em idosos podem repercutir na sua alimentação. Foi realizado um estudo observacional transversal, com amostra de 33 idosos frequentadores da Igreja Evangélica Assembleia de Deus em Alagoas, no município de Coqueiro Seco. Foi feita aplicação de um instrumento de coleta, o qual possuía perguntas baseadas no MBGR e na escala EAT-10. Os resultados mostraram que há um grande número de idosos que fazem uso de prótese dentária, refletindo na execução da função mastigatória, escolha da consistência alimentar e aspectos socioemocionais. As próteses dentárias, quando bem adaptadas, podem gerar um ganho significativo ao paciente, permitindo uma alimentação que não interfere na sua postura social, nem em suas questões emocionais. (AU)

Aging causes changes in all aspects of life, being characterized by a change in social, mental and bodily functions. In the Stomatoglossognathic System, it is possible to observe significant changes, starting with the preparatory phase of swallowing and the chewing function, resulting from the loss of teeth; which is responsible for crushing food, formation of food bolus and loss of muscle tone that are responsible for masticatory movements. This research observed how dental changes in the elderly can affect their diet. A cross-sectional observational study was carried out, with a sample of 33 elderly people attending the Evangelical Assembly of God Church in Alagoas, in the municipality of Coqueiro Seco. A collection instrument was applied, which had questions based on the MBGR and the EAT-10 scale. The results showed that there is a large number of elderly people who use dental prosthesis, reflecting on the performance of masticatory function, choice of food consistency and socio-emotional aspects. Dental prostheses, when well adapted, can generate a significant gain for the patient, allowing a diet that does not interfere with their social posture, nor with their emotional issues. (AU)

El envejecimiento provoca cambios en todos los aspectos de la vida, caracterizándose por un cambio en las funciones sociales, mentales y corporales. En el Sistema Estomatoglosognático, es posible observar cambios significativos, a partir de la fase preparatoria de la deglución y de la función masticatoria, resultantes de la pérdida de dientes; que se encarga de triturar los alimentos, formación de bolos alimenticios y pérdida de tono muscular que son responsables de los movimientos masticatorios. Esta investigación observó cómo las alteraciones dentales en los adultos mayores pueden afectar su alimentación. Se realizó un estudio observacional transversal, con una muestra de 33 ancianos asistentes a la Iglesia Evangélica Asamblea de Dios de Alagoas, en el municipio de Coqueiro Seco. Se aplicó un instrumento de recolección, el cual contó con preguntas basadas en el MBGR y la escala EAT-10. Los resultados mostraron que existe un gran número de ancianos que utilizan prótesis dental, reflexionando sobre el desempeño de la función masticatoria, elección de la consistencia de los alimentos y aspectos socioemocionales. Las prótesis dentales, bien adaptadas, pueden generar una ganancia importante para el paciente, permitiendo una alimentación que no interfiere con su postura social, ni con sus problemas emocionales. (AU)

3-dimensional analysis of hard- and soft-tissue symmetry in a Chinese population.

BACKGROUND: Facial symmetry severely affects appearance and function. Large numbers of patients seek orthodontic treatment to improve facial symmetry. However, the correlation between hard- and soft-tissue symmetry is still unclear. Our aim was to investigate the hard- and soft-tissue symmetry in subjects with different levels of menton deviation and sagittal skeletal classes with 3D digital analysis and to investigate the relationship between the entire and individual hard- and soft-tissues. METHODS: A total of 270 adults (135 males and 135 females) consisting of 45 subjects of each sex in each sagittal skeletal classification group. All subjects were further classified into relative symmetry (RS), moderate asymmetry (MA) and severe asymmetry (SA) groups based on the degree of menton deviation from the mid-sagittal plane (MSP). The 3D images were segmented into anatomical structures and mirrored across the MSP after establishing a coordinate system. Original and mirrored images were registered by a best-fit algorithm, and the corresponding root mean square (RMS) values and colormap were obtained. The Mann‒Whitney U test and Spearman correlation were conducted for statistical analysis. RESULTS: The RMS increased with greater deviations with regard to the deviation of the menton in most of anatomical structures. Asymmetry was represented in the same way regardless of sagittal skeletal pattern. The soft-tissue asymmetry had a significant correlation with dentition in the RS group (0.409), while in the SA group, it was related to the ramus (0.526) and corpus (0.417) in males and was related to the ramus in the MA (0.332) and SA (0.359) groups in females. CONCLUSIONS: The mirroring method combining CBCT and 3dMD provides a new approach for symmetry analysis. Asymmetry might not be influenced by sagittal skeletal patterns. Soft-tissue asymmetry might be reduced by improving the dentition in individuals with RS group, while among those with MA or SA, whose menton deviation was larger than 2 mm, orthognathic treatment should be considered.

Functional dentition and edentulism associated with mortality: A cohort study of older adults in Southern Brazil.

OBJECTIVE: The aim of this study was to evaluate the association between the lack of a functional dentition and edentulism with mortality in a cohort of older adults in a Southern Brazilian city. MATERIALS AND METHODS: This is a longitudinal study carried out with community-dwelling older adults (≥60 years old) from Pelotas, Brazil, using data from the baseline (2014) and the first follow-up (2017). Main exposures were functional dentition (20+ teeth present) and edentulism (absence of all teeth), derived from self-reported number of teeth. All-causes mortality was evaluated according to the city's Epidemiological Surveillance Department. Potential confounders were age, sex, socioeconomic position, smoking, diabetes, hypertension, and body mass index (BMI). To test the association between functional dentition and edentulism with mortality, Poisson regression models with robust variance were used, to estimate Relative Risks and 95% confidence intervals. RESULTS: A total of 1289 older adults had information on all variables of interest and comprise the analytical sample (from 1451 at baseline). When analysing the presence of functional dentition, only 222 individuals (17.2%) had 20 or more teeth in their mouth, while 490 older adults were edentulous (38.0%). Crude analysis showed an association between tooth loss indicators and mortality. Models adjusted for sociodemographic variables and health conditions and behaviours revelled no association between the exposures and mortality. CONCLUSIONS: With the findings of this study, we did not identify an association between edentulism and functional dentition with mortality, after considering important shared risk factors.

Comparative assessment of the positional accuracy of dental implants inserted using computerised stackable surgical guides made using selective laser melting and digital light processing technologies for patients with maxillary terminal dentition.

PURPOSE: To make a comparative estimation of the positional accuracy of dental implants inserted using selective laser melting and computerised stackable surgical guides produced through digital light processing for patients with maxillary terminal dentition. MATERIALS AND METHODS: Twenty-four dental implants were inserted in partially edentulous patients who were treated for tooth loss and required fixed prosthodontic rehabilitation. Virtually designed prosthetically driven fixation bases with stackable surgical osteotomy guides were used for bone reduction after tooth extraction and osteotomy preparation, respectively. The inserted implants were divided into two equal groups according to the type of surgical guide used, either cobalt-chromium guides fabricated through selective laser melting or resin guides produced by digital light processing. The final actual implant position was compared to the preoperative planned position and the coronal and apical deviations were calculated in millimetres, and angular deviation measurements in degrees. RESULTS: A t test was used for comparison (P < 0.05). The mean coronal, apical and angular deviation for the implants positioned using a stackable guide made by digital light processing were greater than those for implants positioned using cobalt-chromium guides fabricated through selective laser melting. Highly significant differences were found between both groups for all the measurements. CONCLUSIONS: Within the limitations of this study, cobalt-chromium stackable surgical guides produced by selective laser melting are more accurate than resin guides produced through digital light processing.

Dosimetric parameters and radiotherapy simulation methods used in preclinical studies of radiation damage to the dentition: a systematic review.

OBJECTIVE: This systematic review investigated the dosimetric parameters used in preclinical studies. STUDY DESIGN: Searches were performed in 3 databases (PubMed, Scopus, and Embase) and gray literature to identify studies for review. In vitro and ex vivo studies that examined the effect of radiation on human permanent teeth were included. The modified Consolidated Standards Of Reporting Trials checklist of items for reporting preclinical in vitro studies was used to assess the risk of bias. RESULTS: In total, 32 studies met the inclusion criteria. The average radiation dose of in vitro studies was 53 (±22) Gy and in ex vivo studies was 69 (±1) Gy. Twenty-two studies used 5 different fractionation schemes. Twenty-two of the included studies did not report the radiotherapy modality of those reporting. Twenty studies used linear accelerators, and 7 used Cobalt-60 with the source-surface-distance of radiation ranging from 1.5 to 100 cm. Distilled water was the storage solution for the dental structure used most commonly. Biases were observed, including small sample sizes, lack of randomization, and blinding processes. CONCLUSION: The dosimetric parameters used in the preclinical studies, including radiation dose, radiotherapy modality, fractionation regime, and the storage solutions used did not support the hypothesis of direct effects of radiation on the dental structure.

Long-term effects of chemotherapy and radiation received during early childhood on the developing dentition of pediatric cancer patients.

INTRODUCTION: The short-term effects of chemotherapy and irradiation are well documented; however, there is paucity regarding their long-term effects, especially in children and adolescents. CASE DESCRIPTION: This paper discusses the long-term effects of chemotherapy and/or radiation received by the patients during their early childhood on the developing dentition. It comprises the compilation of 11 cases with alteration in the dental development screened from 138 cases of the childhood cancer patients who received the chemotherapy and/or radiation as a part of anticancer therapy. RESULTS AND CONCLUSION: The findings revealed that the age of initiation of anticancer therapy along with the synergistic effect of chemo-irradiation, and the dose of radiation used were the principal determinants for the dental abnormalities. The root-related abnormalities were found to be varied and more common as compared to the missing teeth and defects related to the tooth crown.

Investigating the causal effect of cognition on the self-reported loss of functional dentition using marginal structural models: The Panel on Health and Ageing of Singaporean Elderly study.

AIM: To assess the effect of cognition on the loss of functional dentition. MATERIALS AND METHODS: We used data from the three waves of the Panel on Health and Ageing of Singaporean Elderly study (n = 4990 at baseline, 774 complete cases analysed) over 6 years (2009-2015). The outcome was the loss of functional dentition (<21 teeth). The exposure was cognitive impairment, while baseline confounders included age, sex, education, and ethnicity. Time-varying confounders included income, living arrangements, smoking, diabetes, depressive symptoms, cardiovascular disease, and body mass index. We used marginal structural mean models with inverse probability treatment weighted. RESULTS: The mean age of the participants was 70.2 years at baseline. The proportion of participants with loss of functional dentition increased from 74.6% to 89.9% over 6 years. Women, ethnic Chinese, less educated, smokers, people with diabetes, and individuals with depression had a higher proportion of loss of functional dentition than their counterparts. Loss of functional dentition was 1.8 times higher (odds ratio 1.80; 95% confidence interval 0.88-3.69) among those with cognitive impairment after taking well-known confounders into account. CONCLUSIONS: After accounting for the time-varying exposure and confounding evidence, the association between cognition and functional dentition among the elderly in Singapore remains uncertain.

Prognostic Factors for Orthognathic Surgery in Children With Cleft Lip and/or Palate: Dentition and Palatal Morphology.

To determine dental and palatal morphology in children with cleft lip and/or palate (CL/P) and identify morphological prognostic factors for orthognathic surgery (OGS).Retrospective cohort study.Orthodontic department of a university dental hospital.This study included 80 patients with bilateral and unilateral CL/P who had lateral cephalograms at the ages of 7 (T1), 15 (T2) years, and a dental plaster model at T1.Plaster models at T1 were scanned with a three-dimensional (3D) scanner. Morphological features were extracted from 3D models with geometric morphometrics software as principal components (PCs). The combinations of the PCs and other predictive factors (ie, the No. of clefts in the lip and alveolus, the palatal repair method, sex, cephalometric variables at T1, and the No. of missing teeth) were examined by logistic regression to determine the predictability for OGS. The need for OGS and skeletal and dental discrepancies at T2 were examined as outcomes.Shrinkage of the palate, including vertical shallowing and transverse narrowing of the posterior maxilla and cleft-side asymmetry of the anterior maxilla at T1, as well as the No. of clefts in the lip and alveolus, the palatal repair method, male sex, several cephalometric variables for the sagittal and vertical dimensions, and the No. of missing teeth, were found to be predictive factors for OGS.Morphological prognostic factors for OGS in children with CL/P were determined.

Instrumentación rotatoria comparada con instrumentación manual para terapias pulpares en odontopediatría / Instrumentação rotatória comparada com instrumentação manual para terapia pulpar em odontopediatria / Rotary instrumentation compared manual instrumentation for pulp therapy in pediatric dentistry

Introducción: En la terapia pulpar, se han producido avances que no solo están relacionados con los biomateriales empleados sino también con las técnicas utilizadas para la instrumentación; de allí que al optimizar estas últimas se contribuya al aumento de la calidad de la terapéutica en este campo. Objetivo: examinar la evidencia disponible sobre la instrumentación rotatoria comparada con la instrumentación manual para terapias pulpares en odontopediatría. Métodos: Se aplicaron los criterios de informes PRISMA- ScR. Para la búsqueda de los artículos se utilizaron las bases de datos pubmed/Medline, Elsevier, Epistemonikos, Scielo.org, Redalyc.org; Imbiomed y Google académico, Artículos en idioma inglés y español, publicados desde enero 2017 a junio de 2022. Se seleccionaron 15 artículos que cumplieron con los criterios de inclusión establecidos para la revisión. Resultados: 60,0 % de los estudios reportaron que la instrumentación rotatoria tuvo una mejor calidad de obturación que la manual; 40,0% informaron no encontrar diferencias estadísticamente significativas entre ambas técnicas. El 100% de los estudios indicaron que hubo reducción significativa del tiempo de instrumentación de las limas rotatorias en comparación con las manuales. Conclusión: las evidencias señalan que tanto la instrumentación rotatoria como la instrumentación manual son eficaces para garantizar la calidad de la obturación de los conductos radiculares y el tiempo de instrumentación es más corto con la instrumentación rotatoria, este aspecto es muy importante en Odontopediatría ya que reduce el tiempo del tratamiento y contribuye a que el niño sea más cooperador y los tratamientos sean más eficaces.

Introdução: Na terapia pulpar, houve avanços que não estão relacionados apenas aos biomateriais utilizados, mas também às técnicas utilizadas para instrumentação; portanto, a otimização destes últimos contribuirá para um aumento na qualidade da terapia neste campo. Objetivo: Examinar as evidências disponíveis sobre instrumentação rotativa em comparação com instrumentação manual para terapia de polpa em odontologia pediátrica. Métodos: Foram aplicados os critérios de relatório PRISMA-SCR. Os bancos de dados pubmed/Medline, Elsevier, Epistemonikos, Scielo.org, Redalyc.org, Imbiomed e google artigos acadêmicos, em inglês e espanhol publicados de janeiro de 2017 a junho de 2022 foram usados para pesquisar artigos. Foram selecionados 15 artigos que cumpriam os critérios de inclusão estabelecidos para a revisão. Resultados: 60,0 % dos estudos relataram que a instrumentação rotativa tinha melhor qualidade de obturação do que a instrumentação manual; 40,0 % relataram não encontrar diferença estatisticamente significativa entre as duas técnicas. 100% dos estudos indicaram que houve uma redução significativa no tempo de instrumentação dos arquivos rotativos em comparação com os arquivos manuais. Conclusão: As evidências indicam que tanto a instrumentação rotativa quanto a manual, estão sendo eficazes para garantir a qualidade da obturação dos canais radiculares e que o tempo de instrumentação é menor com a instrumentação rotativa. Este aspecto é muito importante na odontologia pediátrica, pois reduz o tempo de tratamento e contribui para que a criança seja mais cooperativa e os tratamentos sejam mais eficazes

Introduction: In pulp therapy, there have been advances that are not only related to the biomaterials used but also to the techniques used for instrumentation; hence, optimizing the latter contributes to increasing the quality of therapeutics in this field. Objective: to examine the available evidence on rotary instrumentation vs. manual instrumentation for pulp therapy in pediatric dentistry. Methods: PRISMA-ScR reporting criteria were applied. For the search of the articles, the pubmed/medline, Elsevier, Epistemonikos, Scielo.org, Redalyc.org databases were used; Imbiomed and academic google, Articles in English and Spanish, published from January 2017 to June 2022. Fifteen articles were selected that met the criteria established for the review. Results: 60.0% of the studies reported that the rotary instrumentation had a better obturation quality than the manual one; 40.0% reported not finding statistically significant differences between both techniques. 100% of the studies indicated that there was a significant reduction in the instrumentation time of rotary files compared to manual files. Conclusion: the evidence indicates that both rotary and manual instrumentation are effective in guaranteeing the quality of root canal filling and that the instrumentation time is shorter with rotary instrumentation, this aspect being very important in pediatric dentistry since the patient the child spends less time in the chair, which contributes to his being more cooperative and the treatment time is reduced.

Functional dentition and associated factors: the evaluation of three indicators

Studying the different indicators of functional dentition classification can contribute to the understanding of the associated factors, and thus help in the definition of strategies associated with oral health care. This approach has been little explored in the literature, especially when considering the older age group. Aim:The aim of this study is to evaluate the factors associated with three distinct functional dentition classification. Methods: Cross-sectional exploratory study using secondary data from the Frailty in Older Brazilians (FIBRA) Project of 876 older adults living in Campinas, Brazil. The indicators of dental function assessed was number of natural teeth present, occluding pairs of teeth and the Eichner index, which were verified by trained dentists, following the World Health Organization criteria for epidemiological studies in oral health. The explanatory variable assessed was the self-perception of oral health-related quality of life measured by the Geriatric Oral Health Assessment Index (GOHAI) and its dimensions. It was also collected sociodemographic information such as age, gender, race/ethnicity, schooling, family income, smoking behavior and frailty status. The association was verified through Poisson regressions for number of teeth and pairs of teeth in occlusion and multinomial regression for the Eichner index, adjusted by sociodemographic and health variables. Results: Lower prevalence of participants with less than 21 teeth who negatively perceived GOHAI ́s pain and discomfort dimension and higher prevalence of having less teeth among the ones that negatively perceived GOHAI ́s physical and functional dimensions. No association was found between the perception of quality of life and occlusion pairs of teeth and the Eichner Index. Conclusion: Two out of three indicators assessed were associated with quality of life. Therefore, it is important to select sensitive indicators to be able to identify and better comprehend this relationship

Investigation of the Effect of Oral Implant Surgery on Clinical Treatment and Oral Function of Patients with Dentition Loss.

In order to investigate the effect of oral implant surgery on clinical treatment and oral function of patients with dentition loss, a total of 118 patients with dentition loss in the Department of Stomatology of our hospital from January 2019 to January 2022 are retrospectively analyzed. They are randomly divided into the conventional group and the implant group. The conventional group is treated with conventional dentition restoration, and the implant group is treated with oral implant restoration. The repair efficiency of the two groups is compared. The swallowing function of the 2 groups is assessed by Standard Swallowing Assessment (SSA) table before and after treatment. Self-rating depression scale (SDS) and self-rating anxiety scale (SAS) are used to compare the negative emotions of the two groups before and after treatment. Experimental results show that the total effective rate of the implant group is significantly higher than that of the conventional group, but no invalid cases occurred in the two groups after treatment.

ANATOMICAL RATIONALE FOR CHOOSING A BLADE FOR POWER-ASSISTED ADENOIDECTOMY IN CHILDREN DEPENDING ON DENTITION.

OBJECTIVE: The aim: To study the anatomic features of the facial skull structures in children of various ages depending on dentition. PATIENTS AND METHODS: Materials and methods: One hundred and forty-four children aged 2-12 years were divided into 4 groups depending on dentition. They underwent anthropometric measure¬ments during adenoidectomy. Based on the cosine theorem, the calculated values were obtained. RESULTS: Results: The distance from choana to the free edge of the retracted soft palate gradually increases from 2.01±0.61 cm in children with stable primary dentition up to 3.09±1.02 cm with mixed dentition. Palato-nasopharyngeal angle in children with stable primary dentition is 126.25±8.76°, in children with aging primary dentition - 132.81±12.21°, and in children with mixed dentition - 120.54±13.72°. CONCLUSION: Conclusions: The optimal configuration of the blade for power-assisted adenoidectomy in children with stable primary dentition has an angle of 53.53±8.76°, and the length of the working part of 2.01±0.61 cm, in children with aging primary dentition - 47.18±12.21° and 2.10±0.71 cm, with mixed dentition - 59.45±13.72° and 3.09±1.02 cm, respectively.

Periodontal status is associated with oral function in community-dwelling older adults, independent of dentition status.

OBJECTIVE: To determine whether periodontal status is associated with oral function, including masticatory performance and occlusal force, among community-dwelling older adults. BACKGROUND: Although a potential association between periodontal status and oral function has been reported, variations in the root surface area (RSA) of each tooth have not been considered. METHODS: We used data from a population-based study involving community-dwelling older adults. The RSA with periodontal ligament (RSA-PL), which quantifies the RSA attached to the periodontal ligament and alveolar bone, was calculated based on full-mouth periodontal examination. Masticatory performance was assessed using spectrophotometric measurement of the color (a* value) of color-changing chewing gum. The bilateral maximal occlusal force (MOF) was measured using a pressure-sensitive sheet and dedicated software. The associations of the RSA-PL, a quantitative marker of periodontal tissue support, with the a* value and MOF were assessed using linear regression models. RESULTS: The analyses included data from 250 adults [60.8% women; age, mean (standard deviation) 82.5 (5.0) years]. On average, the study participants had an RSA-PL of 26.3 cm2 , a* value of 25.0, and an MOF value of 555.1 N. After adjustments for potential confounders, including dentition status, age, sex, dental visit regularity, smoking status, physical activity level, depressive symptoms, a history of stroke or diabetes mellitus, and body mass index, the RSA-PL was found to be associated with the a* value [coefficient (per 1 cm2 increase): 0.16, 95% confidence interval (CI) 0.10-0.22)] and MOF (coefficient: 9.2, 95% CI 5.3-13.1). CONCLUSION: This study demonstrated that greater amounts of remaining tooth-supporting structures, indicated by higher RSA-PL values, were associated with better masticatory performance and a higher occlusal force among community-dwelling older adults.