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Background: Dental caries is a major global public health concern. This study assessed dental caries prevalence and the use of fissure sealants on first permanent molars among Saudi Arabian boys aged 9–12 attending elementary schools to establish effective caries prevention strategies. Methods: Cluster probability sampling was employed to select public and private male elementary schools from five distinct geographic regions in Riyadh city, KSA; 601 male students in the fourth grade (aged 9–10 years), fifth grade (aged 10–11 years), and sixth grade (aged 11–12 years) were included. Only the first permanent molars’ occlusal surfaces were evaluated. Data management was performed using Microsoft excel, statistical analyses were conducted using the statistical package for the social sciences (SPSS), and the chi-square test was utilized. Results: The outcome demonstrated that 67.7% (n=407 children) had decayed, missing, or filled first permanent molars, indicating the presence of caries, while 32.3% (n=194) had caries-free first permanent molars. Only 6.8% (n=41) of children had received fissure sealants. At the tooth level, 37.7% (n=906) of examined teeth had decayed, and 8.1% (n=194) had fillings. The utilization rate of fissure sealants remained low at 3.9% (n=93), with 50.4% (n=1211) of first permanent molars remaining intact. Conclusions: This cross-sectional study highlights a significant prevalence between caries and the limited utilization of fissure sealants on first permanent molars among Saudi Arabian boys, underscoring the urgent need for proactive preventative measures and educational initiatives.
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@#Introduction: Penile length is defined as a length from base of penile until the tip of the glans. If the length of penile less than 2.5 standard deviations (SD) on average of its age it characterized as a micropenis. The aim of this study is to describe the penile length and micropenis condition in elementary school student. Method: This is a descriptive study to find out the penile length in elementary school boys. Penile length was measured from symphysis pubic to tip of the glans using a rigid ruler by stretching the penile or stretching penile length (SPL) and identified the micropenis condition. Results: There were 203 boys with age ranging from 6 until 13 years old. Mean penile length on all age groups are slightly above mean - 2.5 SD. Micropenis was found in 52 boys (22.6%), half of them are in 9 to 11 years old groups. Most subjects are Sundanese. Conclusions: The mean penile length in all age groups were shorter than the reference that we used. Majority of the subjects in our study were Sundanese, this finding suggest that Sundanese children has a shorter penile length than a subject used in our reference study. Micropenis case findings in this study turned out to be quite large and surprising.
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The aim of this study was to determine the prevalence and severity of dental erosion in 12-15-year-old schoolchildren and to compare prevalence between public and private school boys. This cross-sectional study was carried out on 1000, 12-15-year-old school boys in Abha, Saudi Arabia. Dental erosion index proposed by O‘Sullivan was used for the four maxillary incisors. Data analysis included descriptive statistics, location, distribution, and extension of affected area and severity of dental erosion. The prevalence of dental erosion was 25.60% with no significant difference between private and public school students. Matt appearance of the enamel was the most prevalent type of dental erosion (63.63%). In most of the involved cases, more than half of their surfaces were diagnosed as affected by erosion (78.49%). Labial surfaces were the most affected (80.90%), while incisal surfaces were least affected (0.22%). Thus it can be concluded that dental erosion among Saudi school boys is becoming a significant problem, hence it is essential to provide adequate preventive care, and healthier dietary habits campaign for Saudi children.
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The cusp of carabelli trait was first described by Carabelli in 1842. If present, it is seen on the mesial aspect of the mesiopalatal cusp of the deciduous maxillary second molar or permanent maxillary first, second and third molar. The level of expression varies from a mere pit or groove to a well developed cusp. The objective of this study was to assess the prevalence of this trait in Abha Secondary School boys in the age range of 15-20 years. 917 subjects without caries or fillings (or missing) in permanent upper first (16/26) and second molars (17/27) were selected out of the 3408 students examined. The trait was recorded as present or absent in 16/26 and 17/27 only as most of the students had erupted premolars and unerupted third molars. The trait was present in 41.7 percent of the population out of which 82.2 percent were seen on 16/26 bilaterally. It showed more predilection to permanent maxillary right first molar 39.4 percent than permanent maxillary left first molar 35.8 percent. Only 3.1 percent of the population had the trait on 17/27. These results are in contrast with the prevalence studies carried out in Riyadh - 57.6 percent and Jeddah - 58.7 percent. Nevertheless, it places the Saudi population in moderate CT prevalence group.
La cúspide o tubérculo de carabelli, fue descrita por primera vez por Carabelli en 1842. Si está presente, se observa en la cara mesial de la cúspide mesio-palatina del segundo molar superior permanente o temporal, segundo y tercer molar permanentes. El nivel de expresión varía desde una simple fosa a una cúspide bien desarrollada. El objetivo de este estudio fue evaluar la prevalencia de este tubérculo en los alumnos de escuelas secundarias de Abha en el rango de edad entre 15-20 años. 917 sujetos sin caries ni obturaciones (o extracción) en los primeros (16/26) y segundos (17/27) molares maxilares permanentes fueron seleccionados entre 3408 alumnos examinados. El tubérculo se registró como presente o ausente en 16/26 y 17/27 de los molares, la mayoría de los estudiantes tenían erupcionados los premolares y no erupcionados los terceros molares. El tubérculo estuvo presente en el 41,7 por ciento de la población estudiada, fuera de la cual se observó en el 82,2 por ciento sobre 16/26 bilateralmente. Hubo mayor predilección por el primer molar permanente del lado derecho, un 39,4 por ciento, en comparación al lado izquierdo, 35,8 por ciento. Sólo el 3,1 por ciento de la población tuvo el tubérculo sobre 17/27. Estos resultados contrastan con los estudios de prevalencia realizados en Riyadh con 57,6 por ciento y Jeddah con 58,7 por ciento. Sin embargo, coloca a la población de Arabia Saudita en el grupo de moderada prevalencia del tubérculo de carabelli.
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Femenino , Diente Molar/anomalías , Arabia Saudita/epidemiología , Prevalencia , EstudiantesRESUMEN
Changes in the amount of urinary protein and β<SUB>2</SUB>-microglobulin (β<SUB>2</SUB>-MG) were observed after middle-distance running in 46 primary school boys, 46 junior high school boys, 74 high school boys and 51 male college students, aged between 6 and 21 years.<BR>The running distance was varied according to age : 800 m for 6- to 7-year-olds, 1, 200 m for 8- to 9-year-olds, 1, 700 m for 10- to 11-year-olds and 1, 500 m for 12- to 21-year-olds.<BR>Urine was collected from each subject before and 30 min after running, and total urinary protein was analyzed by the Lowry method and β<SUB>2</SUB>-MG by the reverse passive hemagglutination method.<BR>For all subjects at rest, total urinary protein was 14.2-19.1 mg/d<I>l</I> on average and increased to 24.6-96.2 mg/d<I>l</I> at 30 min after running, while β<SUB>2</SUB>-MG at rest was 3.10-7.12 μg/d<I>l</I> and increased to 30.53-1202.87 μg/d<I>l</I> at 30 min after running.<BR>Urinary protein originating in blood plasma and that in non-blood plasma was calculated on the basis of the study of Poortmans (1968) . Urinary protein originating in blood plasma after running was 2.54-6.58 times higher than that before running, whereas non-blood plasma after running was 1.04-1.92 times higher than that before running. This suggests that the increased urinary protein after running mainly originates from blood plasma. In terms of age, urinary protein from non-blood plasma in boys aged 6 to 11 years showed a greater increase than that in boys over 12 years old.<BR>The ratio of β<SUB>2</SUB>-MG to urinary protein after running was 7.0-80.6 times higher than that before running. The correlation coefficient between urinary protein and β<SUB>2</SUB>-MG became higher after running than that before running. These findings indicate that low-molecular-weight urinary protein is predominantly reabsorbed in the proximal renal tubule. In terms of age, the increase in the above ratio in 12-14-year-olds was lower than that in 1521-year-olds, suggesting that the reabsorption ability of the proximal renal tubule matures with age.
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A study was carried out to confirm the present states of physical training and nutritional condition in sportsmen on the growing stage. Energy expenditure (EE), caloric intake (CI), food items, body weight, running distance for 12 min and hematological and biochemical parameters of blood and urine were measured in 17 high school boys during intense summer baseball training for seven days. EE was estimated from the records by direct observation of activities during the baseball training (RMR method), and CI was calculated from the dietary record supplied each subject for the seven observation day.<BR>Following results were obtained.<BR>1) The average EE was 55.4±7.5 kcal/kg/day, and the CI corresponded to 87.2% of the EE, although no significant reduction of body weight was observed at the termination of the training session.<BR>2) Running distance for 12 min gradually decreased.<BR>3) Significant decreases in serum TG, TP and Hgb concentrations, and a remarkable increase in CPK activity were observed on the 4 th and final days. Urinary excretion of phosphate, urea nitrogen and catecholamines also increased gradually.<BR>4) The greater the increase in negative energy balance (CI-EE), the greater the decrease in TG, TP and Hgb concentrations, and the greater the increase in serum CPK and urinary excretion of catecholamines.<BR>The present results suggest that greater intake of total energy, protein and fat is recommended for development of endurance capacity, baseball techniques and sound growth in occasion such as the present baseball training program in high school boys.
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A cross-sectional survey was conducted to determine the prevalence rate of scoliosis in elementary, middle and high school boys in May 1988. The study population included 1,393 male students in Pusan ; 463 students of 4th grade in two elementary schools, 543 students of 1st grade in one middle school and 387 students of 1st grade in one high school. The students of elementary school were screened with inspection by two physicians at the same time and the students of middle and high schools were screened with both inspection by the same physicians and 70mm chest X-ray. Positive students in any one of the two screening tests were measured for height and body weight and asked for the shoulder side on which he carries the school bag. The angle of curvature on X-ray film was measured by Cobb's method. The number of positive students in any one of the two tests were 15(3.2%) in elementary schools, 174(32.0%) in middle school and 92(23.8%) in high school. However, positive rates in both tests were only 2.2% for the middle school students and 2.6% for the high school students and among these students 1.1% out of total middle school students and 2.3% of high school students had a curvature equal to or greater than 5 degrees of Cobb's angle on 70mm chest X-ray film. There was a statistically significant association between the direction of spinal curve and the shoulder side on which one carries school bag among positive students in both screening tests (p<0.05). Mean height and body weight of 281 positive students in any one of two screening tests were compared with the Korean standard for the same age. Mean weight of elementary school students was nearly the same as the standard weight but the height was slightly shorter than the standard. However, both mean height and weight of the middle school students were lower than the standard while those of the high school students were higher. The prevalence rate of scoliosis for the 2nd 3rd grades of high school is presumed to be higher than that of the 1st grade of high school and the rate for girls will be even higher than the rate for boys of the same age. Thus, scoliosis seems to be an important school health problem. To prevent scoliosis, it is recommended to reduce the weight of school bag, educate the students to keep a right posture and exercise periodically.
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Femenino , Humanos , Masculino , Peso Corporal , Estudios Transversales , Tamizaje Masivo , Postura , Prevalencia , Servicios de Salud Escolar , Escoliosis , Hombro , Tórax , Película para Rayos XRESUMEN
To examine the variation in the knee extension force and the integrated electromyogram from rectus femoris, medial vastus and lateral vastus muscles with the knee joint angle in growing children, measurements were conducted in 61 school boys aged from 7 to 12 years old. Anthropometric measurements were also done on the body height, the lower limb length, and so on. Results obtained were as follows.<BR>1) Ratio of the lower limb length comparing with the body height increased with the grade.<BR>2) Maximal force at each joint angle in each grade was shifted peak from 70°to 90°with the grade.<BR>3) The pattern of the integrated surface electromyogram from rectus femoris, medial vastus or lateral vastus muscle at each joint angle was the same in all of the grade. The integrated electromyogram at the maximal voluntary contraction was maximal at 45°of the knee joint angle in the rectus femoris muscle, at 110°in the medial vastus and at 90°in the lateral vastus muscle.