Body Height Estimation According to Deciduous Dental Crown Height in a Peruvian Sample of Preschool Children.

Introduction: Odontometry and body height are distinctive biological traits, making their relationship relevant in the identification of individuals. The objective of this study was to estimate body height according to the height of the crown of deciduous teeth in Peruvian preschool children. Materials and Methods: This analytical study was applied to a calculated sample of 204 preschoolers between 3 and 5 years of age (34 per sex/age group) with fully erupted upper anterior deciduous teeth (from #53 to #63). Measurements included body height with a stadiometer (106 ± 6.56 cm; 94-123 cm) and crown height from canine to canine (3.06 mm in #62 to 8.13 mm in #53) in models with digital vernier (intraclass correlation coefficient ≥ 0.781). Linear regression models included calculation of the regression coefficient (ß) to predict height based on crown height for each deciduous tooth at a significance level of P < 0.05. Results: There was no correlation between body height and crown height by tooth type in the total sample (P ≥ 0.05), but there was in a 3-year-old female in #52 (r = 0.4: moderate) and a 5-year-old female in #53 and #63 (r = 0.36-0.38: low) (P < 0.05). Body height prediction equations are shown according to crown height per tooth and sex/age groups. The regressions were significant, explaining 13%-18% of 3-year-old females in #53 and #52 (1.85-1.86 cm error) and 5-year-old females in #53, #51, and #63 (4.61 at 4.63 cm error) (P < 0.05). Conclusions: The odontology method using crown height of the upper anterior deciduous teeth estimated body height in Peruvian girls of 3 and 5 years of age. The teeth are resistant to traumatic forces so these could be used as a body height estimation parameter for forensic human identification.

In Vitro Effect of Mouthrinses on the Microhardness of Three Different Nanohybrid Composite Resins.

Introduction: Daily use of different mouthrinses at home or in the dental office can alter the properties of resin hardness. The present study aimed to compare Vickers microhardness (VHN) in vitro of nanohybrid composite resins (NCRs) immersed in mouthrinses. Materials and Methods: In total, 120 discs (10 ⨯ 2 mm) were prepared from three NCR shade A2 (n = 40/group) with FiltekTM Z350 XT (Z350XT), Tetric EvoCeram (TEC), and Polofil NHT (PNHT). The specimens were incubated in artificial saliva (37°C ⨯ 24 hr). Specimens were distributed into four mouthrinses (n = 10/group) of artificial saliva (control), chlorhexidine (CHX 0.12%, pH 5.6), cetylpyridine chloride (CPC 0.075%, pH 5.84), and CHX 0.12% + CPC 0.05% (pH 6.2) (2 times/day, 2' ⨯ 12 hr). The VHN (300 gf/10") was measured after 24 hr, 14, and 21 days. Data were analyzed by three-way analysis of variance, followed by post hoc Tukey analysis at 0.05 level of significance. Results: The results revealed a global effect of the interaction of the mouthrinses ⨯ time between NRC evaluated (P=0.001). Baseline VHN in PNHT and Z350XT was higher than TEC. Within each group of NCR, VHN of CHX + CPC > other mouthrinses (PNHT/14 days; Z350XT/21 days), and >CPC (Z350XT/14 days). In mouthrinses-intragroups, VHN of PNHT and Z350XT decreased at 14 days (CHX, CPC) and was maintained over time in NCR (CHX + CPC). VHN-TEC was similar among groups. Conclusion: Microhardness showed differences due to the interaction of the type of NCR, the composition of the mouthrinses, and time. VHN decreased after 14 days and was more affected in composite resins with lower filler content and in mouthrinses with a lower pH.

Relationship Between Sagittal Root Position and Alveolar Wall Thickness of Maxillary Teeth in the Esthetic Area for Immediate Implant Treatment Planning in a Peruvian Population.

OBJECTIVE: The purpose of this retrospective study was to assess facial and palatal alveolar wall thickness (AWT) in relation to sagittal root position (SRP) of maxillary anterior teeth using cone-beam computed tomography (CBCT). METHODOLOGY: 102 CBCT images (60 females, 42 males) of anterior maxillary teeth were reviewed. SRP was classified according to Kan's classification, and AWT was evaluated at coronal (4 mm from the cementoenamel junction), mid-root, and apical (2 mm from the apex) levels of the facial and palatal. Secondary variables of sex, age and tooth type were analyzed. RESULTS: The SRP distribution was 76.6% class I, 11.3% class II, 0.8% class III, and 11.3% class IV. AWT, from thickest to thinnest, was found in palatal apical>mid>coronal, followed by facial coronal>mid>apical. CONCLUSIONS: AWT was thickest in SRP class II, followed by class I and III, and least thick in class IV at all measured areas (P<.05). A significantly higher AWT was associated with class I in central incisors, class II in canine teeth and in males, and class IV in central incisors and canines.

[Comparison of the outcome of orthodontic dental movement using aligners versus fixed orthodontics: a review]. / Comparación del resultado del movimiento dentario ortodóncico usando alineadores versus ortodoncia fija: una revisión.

Introduction: The aligners have become a preferred alternative in terms of orthodontic treatment, surpassing the choice of conventional brackets, due to the comfort and aesthetics that the aligners represent, however, the final result with this system continues to be a controversial issue. The objective of this review was to verify the effectiveness of the treatment completed with aligners versus conventional brackets. Materials and methods: An exhaustive search was carried out in the PubMed, ScienceDirect, Scopus and Embase databases up to the date of January 5, 2023, including comparative studies that evaluated the final result and treatment time of the aligners compared to conventional braces. Two researchers carefully selected the articles evaluated and analyzed different key topics on the subject. Results: In this study, 8 articles were included, according to the studies, the vast majority did not find significant differences in completion between the compared groups. In addition to this, the treatment time in 3 articles was faster with aligners, in 3 articles it was faster with conventional brackets, and in one article no significant difference was found, so it is not yet established whether a system is faster than the other. Conclusions: Both aligners and conventional fixed orthodontics had good results at the end of orthodontic treatment and presented a similar treatment time, however, the majority of treated cases belonged to malocclusions of medium to low complexity, so these cannot be generalized. findings to all malocclusions.

La calidad de vida, relacionada con la salud oral, en el Centro del Adulto Mayor de San Isidro, Lima / Quality of life, related to oral healthcare, in the Elderly Center de San Isidro, Lima

Introducción: El mantenimiento de la calidad de vida es uno de los resultados más importantes de los servicios de atención. Varios planes respaldan la importancia de realizar su medición en los adultos mayores. Objetivo: Evaluar la calidad de vida, relacionada con la salud oral, en los miembros de un centro del adulto mayor en Lima, Perú. Métodos: Se realizó un estudio descriptivo transversal en una población de 1800 adultos mayores. La muestra estuvo conformada por 184 participantes. El instrumento perfil de impacto de salud oral (OHIP14sp) se utilizó para medir la calidad de vida en relación con la salud oral. La validez de contenido se realizó mediante un grupo de evaluadores y la consistencia del cuestionario se evaluó con la prueba alfa de Cronbach. Se resumió la información en porcentajes y se utilizaron pruebas de hipótesis de Fisher y chi cuadrado para identificar la relación de la calidad de vida con el sexo y la edad, y la regresión de Poisson. Resultados: La calidad de vida de los adultos mayores fue mala en el 9,8 por ciento, buena en el 23,4 por ciento, y excelente en el 66,8 por ciento. Las mujeres (71 por ciento) tuvieron mejor calidad de vida que los hombres (58 por ciento). Se observó que a menor edad mejor es la calidad de vida. La mayoría de los adultos podían realizar sus actividades diarias salvo un 7,1 por ciento. La salud bucal no tuvo un impacto negativo en la calidad de vida de los adultos mayores en términos de malestar psicológico, limitación funcional y minusvalía, solo en un 61 por ciento, 49 por ciento y 17 por ciento, respectivamente. Conclusiones: El impacto en la salud oral en Lima identificó como excelente o regular la calidad de vida en relación con la salud bucal de los adultos mayores concurrentes al Centro del Adulto Mayor de San Isidro(AU)

Introduction: Maintaining quality of life is one of the most important results of care services. Several plans support the importance of measuring it in older adults. Objective: To assess oral health-related quality of life in members of a senior center in Lima, Peru. Methods: A descriptive cross-sectional study was carried out in a population of 1800 older adults. The sample consisted of 184 participants. The oral health impact profile instrument (OHIP14sp) was used to measure quality of life in relation to oral health. Content validity was performed by a group of evaluators and the consistency of the questionnaire was evaluated with Cronbach's alpha test. The information was summarized in percentages and Fisher's and chi-square hypothesis tests were used to identify the relationship of quality of life with gender and age, and Poisson regression. Results: The quality of life of older adults was poor in 9.8 percent, good in 23.4 percent, and excellent in 66.8 percent. Women (71 percent) had a better quality of life than men (58 percent). It was observed that the younger the age, the better the quality of life. Most of the adults were able to perform their daily activities except for 7.1 percent. Oral health did not have a negative impact on the quality of life of older adults in terms of psychological discomfort, functional limitation and handicap, only 61 percent, 49 percent and 17 percent, respectively. Conclusions: The impact on oral health in Lima identified as excellent or regular the quality of life in relation to oral health of older adults attending the San Isidro Senior Center(AU)

Association Between Periodontal Disease and the Risk of COVID-19 Complications and Mortality: A Systematic Review.

AIM: The COVID-19 pandemic has strained the world's healthcare systems. Studies have identified how the COVID-19 infections are linked to several co-morbidities such as hypertension, diabetes, cardiovascular disease, renal and pulmonary disease. It is known that periodontal disease (PD) shares the same risk factors. Moreover, both diseases are characterized by an exaggerated immune response. The aim of the study was to investigate the available evidence of a potential association between PD and the risk of COVID-19 complications and mortality. MATERIALS AND METHODS: MEDLINE/PubMed, EMBASE, Scopus, and ProQuest were searched. Studies that assess the association between PD and the risk of COVID-19 complications and mortality were eligible for inclusion. Two independent reviewers performed the selection of articles and data extraction. The New Castle Ottawa Scale was used to assess the quality of the selected studies, and the GRADE system was used to evaluate the level of confidence to support the conclusions. RESULTS: Only two studies met the eligibility criteria. One study had a low risk of bias, whereas the other had a high risk of bias. CONCLUSION: The level of confidence in the available evidence is very low. A close association between periodontitis and the risk of COVID-19 complications and mortality can neither be supported nor refuted.