Bruxismo y desagaste oclusal asociado a enterobiasis en niños en edad preescolar de la provincia Junín / Bruxism and occlusal wear associated with enterobiasis in preschool children from Junín province

Debido a que el bruxismo es un hábito oral prevalente entre los niños y un potencial destructor de los tejidos orales, el presente estudio tuvo como objetivo investigar la relación entre las infecciones por Enterobius vermicularis y el bruxismo entre los niños de un preescolar en la provincia de Junin. La muestra estuvo conformoda por 96 niños de 4 a 6 años. El bruxismo se investigó en base a los informes de los padres sobre el rechinar de dientes por la noche, la calidad del sueño y aspectos clínicos tanto intraorales como extraorales relacionados con la afección. El análisis de datos involucró estadísticas descriptivas, chi-cuadrado de Pearson. La prevalencia de bruxismo fue de 65,62%. Se observó a través del índice de BEWE en los infantes con bruxismo y parasitados por E. vermicularis que el 30,15% se diagnóstico defecto evidente con pérdida de tejido duro menor. No se evidenció asociación estadísticamente significativa entre el bruxismo y el parsitismo por E. vermicularis. Con base en los presentes hallazgos, la prevalencia del bruxismo del sueño fue significativo(AU)

Because bruxism is a prevalent oral habit among children and a potential destroyer of oral tissues, the present study aimed to investigate the relationship between Enterobius vermicularis infections and bruxism among children of a preschool in the province of Junin. The sample consisted of 96 children from 4 to 6 years old. Bruxism was investigated based on parental reports of nighttime teeth grinding, sleep quality, and both intraoral and extraoral clinical aspects related to the condition. Data analysis involved descriptive statistics, Pearson's chi-square. The prevalence of bruxism was 65.62%. It was observed through the BEWE index in infants with bruxism and parasitized by E. vermicularis that 30.15% were diagnosed with an obvious defect with minor hard tissue loss. No statistically significant association was found between bruxism and E. vermicularis parasitism. Based on the present findings, the prevalence of sleep bruxism was significant(AU)

A study on the occlusal wear patterns in maxillary posterior teeth with palatal side abfractions

PURPOSE: Aims to analyze the occlusal wear patterns in maxillary posterior teeth with palatal side abfractions and study the association between occlusal force and abfractions. MATERIALS AND METHODS: This study was conducted in a total of 308 teeth from 148 patients with palatal side abfractions in maxillary posterior teeth. The occlusal wears in maxillary premolars and molars with palatal side abfractions were classified and recorded. The classification was done by type of teeth, age, and gender, and in order to evaluate the statistical significance between groups, chi-square test was conducted (α = 0.05). RESULTS: Palatal side abfractions in maxillary posterior teeth were observed at the highest frequency in the 1st molars, and in all teeth with palatal side abfractions, more than one occlusal wear was observed. In classification by type of teeth, by age, and by gender, the occlusal wears in teeth with palatal side abfractions were observed at high frequency in cuspal inclined plane, central fossa, and marginal ridge, and there was a statistical significance (P < 0.05). CONCLUSION: Palatal side abfractions were observed at the highest frequency in maxillary 1st molars, and in all maxillary posterior teeth where palatal side abfractions were found, the occlusal wears were observed. And the occlusal wears were observed at high frequency in cuspal inclined plane, central fossa and marginal ridge. Such results show that abfraction is associated with occlusal force.

Clinical study on the comparison of gold and zirconia wear in an implant-supported fixed prosthesis

PURPOSE: The purpose of this study was to compare and analyze the wear of a prosthesis for 6 months after restoration with implant-supported fixed dental prosthesis made of either zirconia or gold. MATERIALS AND METHODS: This study was conducted on patients requiring implant-supported fixed dental prostheses on first or second molar from January, 2015 to January, 2016. A total of 47 prostheses and antagonists were examined. Occlusal surface was recorded by impression of each prosthesis and antagonist 1 week and 6 months after prosthesis delivery. The digital files were created by impression scan. Occlusal shapes of 1 week and 6 months were compared and wear of prostheses and antagonists was analyzed. The Mann-Whitney test was used to analyzed the result data underwent normality test using SPSS (Version 23.0, IBM Corporation) RESULTS: Mann-Whitney test revealed that there was no statistically significant difference in the median amount of mean vertical wear for 6 months in zirconia (50.84 μm) and gold (42.84 μm) prostheses (P > 0.05). When the opposing teeth were natural, the median amount of mean vertical wear of zirconia and gold prostheses was 47.72 μm and 41.97 μm, respectively, and the median amount of mean vertical wear of enamel was 47.26 μm and 44.59 μm, respectively. Statistical analysis showed no significant difference (P > 0.05). CONCLUSION: Despite the short study period and the small number of experimental groups, zirconia and gold showed no significant difference in wear during the first 6 months. Opposing natural enamel also showed no significant difference in the wear.

A study to correlate the incidence of cross arch balance and working side occlusal wear facets among different age groups: An in vivo study.

Introduction: The prevalence of group function and canine guided occlusion is common in natural dentition, but cross arch balance is not often seen. Hence, a study was carried out with following objectives: Analysis of incidence of cross arch balance in different age groups and working side occlusal wear facets in following subjects. Materials and Methods: A total of 200 patients with natural dentition were included in the study. Subjects with cross arch balance were analyzed for working side occlusal wear facets. Data were analyzed statistically by Chi-square test. Results: The incidence of cross arch balance in the study group was 0.7%. On examination, subjects with group function on the working side and cross arch balance on the non-working side had more occlusal wear facets. Conclusion: From the study, it was observed that there was no significant variation in the number and extent of wear facets between the cross arch and without cross arch subjects due the smaller sample size hence it was difficult to conclude the relationship non-working side contact as interference and its influence in wearing of dentition in this study.

An alternative treatment of occlusal wear: Cast metal occlusal surface.

Acrylic resin denture teeth often exhibit rapid occlusal wear, which may lead to decrease in the chewing efficiency, loss of vertical dimension of occlusion, denture instability, temporomandibular joint disturbances, etc. There are various treatment options available like, use of highly cross linked acrylic teeth, amalgam or metal inserts on occlusal surface, use of composite, gold or metal occlusal surface, etc. Several articles have described methods to construct gold and metal occlusal surfaces, however, these methods are time-consuming, expensive and requires many cumbersome steps. These methods also requires the patient to be without the prosthesis for the time during which the laboratory procedures are performed. This article presents a quick, simple and relatively inexpensive procedure for construction of metal occlusal surfaces on complete dentures.

Prosthodontic management of worn dentition in pediatric patient with complete overlay dentures: a case report

Overlay complete dentures are simple, reversible and economical treatment modality for patients with congenital or acquired disorders that severely affect the tooth development. It satisfies both the esthetic and functional demands where the extraction of teeth is not generally indicated. In pediatric patients, the overlay dentures establish a relatively stable occlusion that improves patient's tolerance to the future treatment procedures for worn dentition. This clinical report highlights the imperative need of appropriate treatment strategy and application of maxillary and mandibular overlay dentures in a pediatric patient who suffered from congenitally mutilated and worn dentition.

Full mouth rehabilitation of destroyed dentition with rotational path removable partial denture: a case report

BACKGROUND: Though implant dentistry is very successful and predictable in treatment of patients with destroyed dentition, there are some cases with limitations to implant therapy. In these cases, alternative treatment modality should be considered. CASE DESCRIPTION: A patient with destroyed dentition was rehabilitated with a lateral rotational path removable partial denture. According to the diagnosis, we determined to raise vertical dimension for esthetic and functional restoration. The final restoration was performed after four months of provisional period. CLINICAL IMPLICATION: The edentulous patients with compromised esthetics and functions can be successfully treated with a rotational path removable partial denture through adequate treatment planning and precise laboratory procedure.

Asimetría del desgaste oclusal bilateral en dentición permanente y su relación con la paleodieta en una sociedad prehispánica de tradición cultural Sonso en Colombia / Bilateral asymmetry of occlusal wear in permanent dentition and its relationship with paleodiet in a Sonso pre-conquest cultural tradition from Colombia

Introducción: la dieta es un problema general en la antropología. Diferentes perspectivas como la biométrica,etnobotánica y bioquímica aúnan esfuerzos para comprender con mayor solidez los procesos bioculturales que cobijan el desarrollo de las costumbres asociadas a la dieta. La dieta antigua puede ser estudiada desde el desgaste dental usando una perspectivamorfofuncional debido a que la relación establecida entre el sistema masticatorio y los componentes de la comida compromete la pérdida progresiva de esmalte y su relación con las costumbres alimenticias de una población. Métodos: este artículo presenta los resultados de investigación sobre el desgaste dental de una muestra de 37 individuos de una sociedad prehispánica del suroccidentecolombiano de tradición cultural Sonso. Se tomaron los diámetros entre la unión dentino-esmalte (DEJ) y el punto más alto de cada cúspide usando un calibrador convencional. Se comparó la asimetría bilateral del desgaste usando el coeficiente de distribución t Student. Resultados: los valores obtenidos muestran que existen por lo menos seis rasgos que expresan diferencias significativas. Conclusiones: las muestras analizadas presentan desgaste oclusal con tendencia derecha superior e inferior, las cúspides mesiales de los dientes posteriores se desgastan más que los dientes anteriores, las cúspides linguales de los primeros y segundos molares inferiores presentan mayor desgaste que las bucales, contrario a lo que podríamos esperar de la relación funcional en el plano helicoidal, el metaconido de primeros y segundo molares es el más afectado por el proceso abrasivo de la dieta, los premolares sí se comportan de acuerdo con el desgaste funcional esperado por el plano helicoidal.

Introduction: diet is a major problem in anthropology. Different points of view such as biometry, ethno botany, andbiochemistry join to understand the biocultural processes covering the development of traditions associated with diet. Ancient diet can be analyzed from a dental wear point of view using a morpho-functional perspective since the relationship established between the masticatory system and the food components compromises the progressive loss of enamel and their relationship with the nutrition traditions of a population. Methods: this article shows the research results on dental wear of 37 individuals from a pre-conquest human population of Sonso cultural tradition from Colombia. The diameters between dentine-enamel junctions (DEJ) and the highest point in each cusp were measured using a conventional caliper. Student’s t Test for distribution of samples was usedto compare bilateral asymmetry of tooth wear. Results: the values showed that at least 6 measures have statistically significant differences. Conclusions: the samples analyzed here showed a tendency of occlusal wear on the right side of both upper and lower arches, mesial cusps wear mostly in the posterior teeth rather than anterior teeth, lingual cusps of first and second lower molars presented more wear than buccal cusps, metaconido of first and second lower molars is the most affected by the abrasive processof the diet, and premolars behaved as expected regarding functional wear in the helicoidal plane.