Sistema Regional de Información
en línea para Revistas Científicas de América Latina,
el Caribe, España y Portugal

Introduction: Neuromuscular deprogramming reduces the main symptoms such as pain by 70 to 90% in patients with temporomandibular dysfunction, but little information is available on the effect on quality of life and sleep.Objective: Determine the effect of neuromuscular deprogramming on quality of life and sleep in patients with temporomandibular dysfunction.Methods: 55 patients with temporomandibular dysfunction were included who were neuromuscularly deprogrammed (29 women and 26 men), with an average age of 34.9 ± 16.5 years. At the beginning and end of neuromuscular deprogramming, surveys were applied to assess the level of chronic pain, perception of quality of life related to oral health, perceived stress, quantity and quality of life, anxiety and depression.Results: In 37 patients (68%) pain was identified on examination, and it was confirmed in the chronic pain survey. The quality of life perception score was correlated with low sleep quality (r = 0.39; p = 0.008); pain score (r = 0.48; p = 0.003); anxiety (r = 0.55; p = 0.003) and depression (r = 0.41; p = 0.006). Neuromuscular deprogramming reduced patient-reported pain levels from 9.9 to 2.9 (p = 0.001), the percentage of patients with poor sleep quality from 60% to 29% (p < 0.0001), the quality of life score from 40.7 to 23.8 (p = 0.03), and perceived stress levels from 22.1 to 19.1 (p = 0.002).Conclusions: In patients with temporomandibular dysfunction, neuromuscular deprogramming reduces the level of pain. It is related to better perception in quality of life, higher quality of sleep and decreases perceived stress. 

Introduction: Severe early childhood caries is a public health problem affecting sufferers and their families.Objective: Determine the association of sociodemographic, hygiene and food intake variables to severe early childhood caries in Peruvian children.Methods: An observational analytical case-control study was conducted from October to December 2019. The study sample was 264 children aged 2-5 years (100 from the group without caries and 164 from the group with severe early childhood caries) and their companions, who attended the Children's Dental Care Department at the National Children's Health Institute in Lima, Peru. Direct structured interviews were held based on closed-ended questions about sociodemographic, hygiene and food intake variables, and a clinical evaluation was performed using the cpo-s index. Use was made of the chi-square statistical test, the Kruskal-Wallis test and the binary logistic regression model.Results: Among the sociodemographic variables considered, a negative dental care experience and health insurance obtained a value of p < 0.05. The same result was obtained by use of fluoride toothpaste, bottle feeding, bottle feeding time and age at tooth brushing start. In the binary logistic regression model only the variables use of fluoride toothpaste (OR = 0.578; 95 % CI: 0.495-0.674) and age at tooth brushing start (OR = 0.924; 95 % CI: 0.850-0.938) obtained a value of p < 0.05.Conclusions: The variables age at tooth brushing start and use of fluoride toothpaste are associated to the appearance of severe early childhood caries in Peruvian children. Sociodemographic and food intake variables are not associated.

Introduction: Differences in the mechanical properties of ceramic and resin-based materials pose the question of which of the two will perform better in the long run.Objectives: Evaluate the flexural resistance and color stability of different indirect esthetic restorative materials.Methods: The materials selected were Filtek™ Z250 XT (3M ESPE), Ceramage (SHOFU Dental), VITA VM® LC and VITA ENAMIC® (VITA Zahnfabrik), IPS e.max® (Ivoclar-Vivadent) and Zolid FX (Amann Girrbach AG). The flexural resistance assay (n = 10) was conducted in a universal mechanical testing machine. Color readings (n = 5) were taken with a VITA Easyshade V® spectrophotometer.Results: All-ceramic materials had better mechanical performance (p < 0.001). Color stability results show that Ceramage, IPS e.max® and Zolid FX displayed a statistically significant difference (p ≤ 0.002) with respect to Filtek Z250 XT, VITA VM® LC and VITA ENAMIC®.Conclusions: All-ceramic materials exhibited greater flexural resistance and color stability than polymer-based materials. However, indirect esthetic materials with polymers in their composition, such as Ceramage, are presented as a valid alternative, due to their appropriate mechanical properties and their color stability, which is similar to that of ceramic materials.

Introduction: We are living in a context of COVID-19 pandemic, where the shortage of personal protective equipment in health is evident and it is expected that it will continue in the short and medium term. So, considering the reuse or prolonged use of some personal protective equipment, especially respirators, could be an alternative to consider.Objective: To review and disseminate, based on scientific evidence, different forms of disinfection in order to safely and affordably reuse N95 respirators.Main comments: N95 respirators or their equivalents are for the exclusive use of health personnel for the care of patients with suspected or confirmed COVID-19 and in aerosol generation procedures. Its effectiveness depends to a large extent on the condition of the respirator, the filtration capacity, the sealing and its proper use. There are several methods to disinfect, such as ultraviolet light type C, hydrogen peroxide, dry and humid heat, ozone, microwave irradiation, etc. If these procedures are not performed properly, they may not be effective.Global feedback: In personal protective equipment shortage scenarios, reuse is a viable, economical, safe, potentially scalable and easy-to-perform procedure. N95 respirators require a special disinfection procedure to preserve their filtration and sealing capacity. There are a limited number of disinfection and reuse cycles. Dry heat stove might be the most affordable method in private settings.

Introduction: Endo-periodontal lesions can lead to the formation of severe intraosseous defects in the periodontium; which can lead to tooth loss.Objective: Demonstrate that surgical periodontal therapy with the help of gelatin sponges, with colloidal silver nanoparticles, restores bone tissue lost in endo-periodontal lesions.Case presentation: 55-year-old male patient without systemic alterations, diagnosed with grade 3 endo-periodontal lesion in patients with periodontitis. It was treated first with ducts and then with periodontal surgery combined with gelatin sponges, which contain colloidal silver nanoparticles, and were placed filling the 2-wall bone defect involving > 80% of the root length, with 24 months of radiographic and clinical follow-up.Conclusions: Based on the case report, surgical periodontal therapy and filling of bone defects with gelatin sponges, which contain colloidal silver nanoparticles, were sufficient to restore the lost bone at a 24-month follow-up. However, further studies are needed to assess the clinical benefit of this material for the treatment of intraosseous defects.

Introducción: La ruptura de una aguja dental es una complicación infrecuente y sucede generalmente por el movimiento repentino y/o cierre bucal inesperado del paciente, por doblar la aguja en forma inadecuada, por insertarla completamente o moverla dentro del tejido blando, por elegir agujas de calibre y longitud inadecuados y al realizar técnicas anestésicas inapropiadas. Cuando la aguja no puede ser recuperada al instante, debe establecerse su ubicación imagenológica tridimensional y decidir el manejo. Ante tal situación, su eliminación quirúrgica es la propuesta más recomendable por la posibilidad de que migre y lesione estructuras anatómicas importantes.Objetivo: Realizar una revisión de la literatura y presentar un caso clínico de ruptura de aguja dental localizada en el espacio pterigomaxilar, resuelto con un abordaje intrabucal laterofaríngeo.Presentación de caso: Paciente masculino de 8 años de edad, que acude a consulta por presentar ruptura de una aguja dental. Para obtener su ubicación se utilizó una tomografía computarizada de haz cónico con reconstrucción tridimensional a boca cerrada y abierta. Esta prueba ofreció mayor precisión y correspondencia anatómica, considerando que la eliminación quirúrgica podría realizarse mediante un abordaje intrabucal. Así fue hecho y durante la intervención quirúrgica se advirtió que la aguja había migrado a una ubicación superior y posterior, al espacio pterigomaxilar. Ante tal situación, resultó de mayor complejidad su recuperación, que ya presentaba riesgos por el procedimiento complejo al que se sometió.Conclusiones: La anestesia local intrabucal no está exenta de complicaciones propias como la ruptura de la aguja dental. Cuando este evento se presenta, el resultado puede ser de muy difícil manejo.

Introduction: Oral health is a current problem in society; preventive measures such as brushing techniques must be according to motor skills.Objective: Evaluate the relationship between oral conditions and psychomotor development in children aged 6 and 7 years.Methods: The sample consisted of 30 children in the age range of 6 and 7 years, who attend “Manuel Bonilla” school (Lima, Peru). It was divided by 2 groups, which were taught two brushing techniques: Bass-modified technique and Fones technique. There were obtained values of oral conditions, according to the levels of gingival index, hygiene index and the level of severity. On the other hand, the levels of psychomotricity were acquired, evaluated by the Bruininks-Oseretsky test. The analysis of the statistical data was executed with the SPSS and R program.Results: A group of 29 children were incorporated into the sample and a total of 631 teeth were analyzed. The results demonstrated a positive association with a single range (gingival bleeding index) of oral conditions and psychomotor aspects of children between 6 and 7 years. Additionally, a positive association was found between the Bass Modifica brushing technique and optimal oral conditions.Conclusions: The current results suggest a marginal association between the variables studied, which may be potentially more significant with an increase in the sample number. As humans develop new motor skills, they should have a better command of basic health needs such as weighing good oral hygiene. Therefore, it is necessary to recommend brushing techniques according to the level of psychomotor development of the child.

Introduction: The reasons for tooth loss have been well defined for several centuries. However, systematic analysis of the causes of tooth loss in the first years of the present century would shed light on the current manifestation of this phenomenon.Objective: Determine the main causes of tooth mortality in the last 20 years.Methods: A systematic review was conducted using the Boolean search engines in PubMed, Web of Science, Scopus and SciELO bibliographic search platforms. The search was based on the following MeSH terms: cause, motive, mortality, extraction, dental extraction, loss, and combinations thereof. The articles included were in English or Spanish. Calibration was performed by the authors to evaluate the articles to be selected.Results: A total 593 articles were retrieved: 16 from Web of Science, 39 from Scopus, 531 from Pubmed and 1 from SciELO, of which 26 were included in the study. A predominance was found of articles published in English (80.8%). The main causes of tooth mortality dealt with were dental caries (92.30%) and periodontal disease (50.0%).Conclusions: The evidence obtained in the last 20 years is insufficient to determine the main reasons for dental extraction by continent. There is little availability of articles about areas from the most densely populated and developed countries in each continent. The articles included showed a predominance of dental caries and periodontal disease as the main reasons for dental extraction.

Most of the researches over Jatropha curcas biodiesel production are focused on fuel properties ofJatropha biodiesel, the approaches and techniques used to produce biodiesel, evaluation of physical,chemical and fuel properties of Jatropha biodiesel and the comparison with biodiesel producedfrom other feedstocks, or on environmental impact of Jatropha biodiesel or associated with futuresustainability of Jatropha biodiesel. Nevertheless, less information can be found based on thepotential of Jatropha curcas and Moringa oleifera wastes for gasification and pyrolysis. The scopeof this paper is to make a state of art survey in this particular subject in order to show the realpotential of the co-product of these two biodiesel production feedstocks. The use of the shell andhusk by-products of the biodiesel production process from Jatropha curcas and Moringa oleifera isnot well reported but there are enough reports demonstrating the feasibility of their use andexcellent features as biomass feedstocks for thermochemical conversion. The economic feasibilityof small/medium-scale gasification systems integrated to internal combustion engines using JCshell for producing electricity is reported. There is more studies respect the use of JC instead ofMoringa. In any case, the implementation of these biomass will depend on disposal, therefore areonly suitable in-situ in located specialized agro industrial facilities at local scale.

Introduction: Osteoporosis is a disease of the skeletal system caused by a gradual reduction in bone mineral density and deterioration of the microarchitecture, raising the risk of fracture. It is therefore necessary to implement diagnostic actions allowing early detection of mineral density alterations. Given the fact that dental radiographs are routine practice and make it possible to examine the bone structure of maxillae and mandibles, they have been proposed as primary tools for osteoporosis diagnosis.Objective: Examine the viability of and progress in the use of periapical and panoramic radiographs as early predictors of osteoporosis.Main remarks: A review was conducted about the combined use of panoramic and periapical radiographs. Both are machine learning techniques and morphometric indices.General considerations: Panoramic and periapical radiographs may be useful for early prediction of osteoporosis. To achieve this end, dentists should have broad experience interpreting radiographic images or be specialists in oral radiology or maxillofacial surgery. On the other hand, computer tools based on machine learning are available which have obtained results in osteoporosis identification comparable to those obtained by radiologists. Those tools may support the work of less experienced professionals. Dentists should be the first to detect anomalous bone density changes, timely referring patients suspected of osteoporosis to the corresponding specialist.