scholarly journals Occlusal sequalae of the loss of first permanent molars among children and adolescents.

2020 ◽  
Vol 3 (2) ◽  
pp. 35-42
Author(s):  
Henrietta Hilda Kallos ◽  
Emese Rita Markovics ◽  
Silvia Izabella Pop ◽  
Krisztina I. Mártha
Keyword(s):  
Contact Point ◽  
Point System ◽  
Lateral Deviation ◽  
Chi Square ◽  
Contact Points ◽  
Chi Square Test ◽  
Permanent Molars ◽  
Masticatory Force ◽  
The Stability ◽  
First Permanent Molars

AbstractObjective: The purpose of the present study is to evaluate the disintegration of the contact point system, the occlusal changes, and the masticatory force following the loss of the first permanent molars (FPM).Material and methods: Clinical examinations were performed among 8-18-year-olds following the changes in the contact points and their effects on the dento-maxillary apparatus. The sample comprises 422 individuals, 220 girls and 202 boys. The occlusal masticatory force was measured using the T-Scan in the case of the opening of contact points. For the statistical data analysis, was used correlation and Chi Square Test in the GraphPad InStat program.Results: A very weak reverse dependence was found between the size of the edentulous space and the deflection of the upper and lower interincisal lines (r=-0.02) and between the age and size of the edentulous space (r=-0.05). There is a statistically significant chance of mandibular lateral deviation by dental migration following edentulism (p=0.043). In the case of the opening of contact points, there are 1.42 times higher risks of modified sagital relationship in the molar segment (p=0.016) and 2.7 times greater risks of the tipping of the neighbouring teeth (p=0.021). Following the evaluation of the T-Scan measurements, we found in each case a significant decrease in the masticatory force in the edentulous area and the opening of the interproximal contact points.Conclusion: Based on the obtained results, we can state that the opening of contact points decisively influences the stability of the occlusion and the size of the masticatory force.

scholarly journals The Correlation Analysis of Caries Status Between Primary Molars and First Permanent Molars

2020 ◽  
Author(s):  
Liang Xu ◽  
Yuee Liang ◽  
Leyi Chen ◽  
Xiaolin Lv ◽  
Haixia Liu ◽  
...  
Keyword(s):  
Dental Caries ◽  
Correlation Analysis ◽  
Assessment System ◽  
Caries Detection ◽  
Primary Molars ◽  
Risk Indicator ◽  
Chi Square ◽  
Chi Square Test ◽  
Permanent Molars ◽  
First Permanent Molars

Abstract Background: First permanent molars (FPMs) are the most critical teeth in the dental arc. Meanwhile they bear the highest risk for carious lesions. The aim of this study was to investigate the caries status of primary and permanent teeth among 8-9-year-old children in Guangzhou, and the correlation between the caries of primary molars and first permanent molars (FPMs).Methods: 119 samples of children aged 8-9 were included. The scoring and evaluation were processed in accordance with International Caries Detection and Assessment System (ICDAS). Statistical analysis was performed using SPSS 20.0 software package by means of Pearson Chi-square test and Kendall’s correlation.Results: Pearson Chi-Square test showed that the prevalence of dental caries of the first primary molars, second primary molars and primary molars had significant correlation with that of FPMs, while Kendall’s correlation analysis showed that they had weak positive correlation. What’s more, the Pearson chi-square test showed that there was no significant correlation between the degree of dental caries of different primary molars and FPMs.Conclusion: Caries in primary molars, especially the second molars, were considered to be a risk indicator for the development of permanent molars in the future. However, regardless of the degree of primary molars caries, the susceptibility of FPMs caries should be aware of. And pit and fissure sealants for them should be carried out as soon as possible.

scholarly journals The Correlation Analysis of Caries Status Between Primary Molars and First Permanent Molars

2020 ◽  
Author(s):  
Liang Xu ◽  
Yuee Liang ◽  
Leyi Chen ◽  
Xiaolin Lv ◽  
Haixia Liu ◽  
...  
Keyword(s):  
Dental Caries ◽  
Correlation Analysis ◽  
Assessment System ◽  
Caries Detection ◽  
Primary Molars ◽  
Risk Indicator ◽  
Chi Square ◽  
Chi Square Test ◽  
Permanent Molars ◽  
First Permanent Molars

Abstract Background First Permanent Molars (PFMs) are the most critical teeth in the dental arc. Meanwhile they bear the highest risk for carious lesions. The aim of this study is to investigate the caries status of primary and permanent teeth among 8-9-year-old children in Guangzhou, and the correlation between the caries of primary molars and first permanent molars(FPMs).Methods 119 samples of children aged 8-9 were included. The scoring and evaluation were processed in accordance with International Caries Detection and Assessment System (ICDAS). Statistical analysis was performed using SPSS 20.0 software package by means of Pearson Chi-square test and Kendall’s correlation.Results Pearson Chi-Square test showed that the prevalence of dental caries of the first primary molars, second primary molars and primary molars had significant correlation with that of FPMs while Kendall’s correlation analysis showed that they had weak positive correlation. What’s more, the Pearson chi-square test showed that there was no significant correlation between the degree of dental caries of different primary molars and PFM.Conclusion Caries in primary molars, especially the second molar, are considered to be a risk indicator for the development of permanent molars in the future. However, regardless of the degree of primary molars caries, the susceptibility of FPMs caries should be aware of. And pit and fissure sealants for them should be carried out as soon as possible.

scholarly journals The effect of horizontal and vertical dimensions of the interproximal space on the existence of interdental papillae – A clinical study

2021 ◽  
Vol 6 (3) ◽  
pp. 143-148
Author(s):  
Ashwath B ◽  
Kavitha P ◽  
Jeeva Rekha M
Keyword(s):  
Contact Point ◽  
Vertical Dimension ◽  
Chi Square ◽  
Dental Papilla ◽  
Horizontal Dimension ◽  
Alveolar Crest ◽  
Distal Surface ◽  
Chi Square Test ◽  
Interdental Papilla ◽  
Open Flap Debridement

The aim of the present study was to determine the existence of inter dental papilla according to the vertical dimension, horizontal dimension and the combined effects of the vertical and horizontal dimensions of the interproximal space on the existence of interdental papilla.182 interdental sites of 42 periodontitis patients undergoing open flap debridement were included in the study. The existence of interdental papilla was determined based on the Papilla Presence Index (PPI). The vertical dimension (VD) was measured from the alveolar crest to the contact point using UNC-15 probe. Horizontal dimension (HD) was measured from the mesial surface of the distal tooth and the distal surface of the mesial tooth at the level of the alveolar crest using castroviejocaliper. Statistical analysis was done by using independent ‘t’ test, Pearson’s Chi-square test and Trend Chi-square test. The existence of papilla was significantly higher in VD ≤ 5mm (91.5%) compared to VD > 5mm (9.8%) [p< 0.0001]. The existence of papilla was significantly higher in HD < 2mm (97%) compared to HD ≥ 2mm (1.2%) [p< 0.0001]. The contribution of both vertical dimension and horizontal dimension to the existence of papilla was about 61.6% and thus the existence of papilla may be influenced by various other factors (about 38.4%) which were not included in this study.The vertical and horizontal dimensions of the interproximal space gains significance in determining the existence of papilla and further research is needed to analyze the other factors influencing the papilla.

Evaluation of Resting Tongue Position in Partially Edentulous and Completely Edentulous Patients

2020 ◽  
Vol 3 (1) ◽  
pp. 73-78
Author(s):  
Dinesh Sharma Bhusal ◽  
Bebina Shrestha
Keyword(s):  
Statistical Tests ◽  
Chi Square ◽  
Edentulous Mandible ◽  
Tongue Position ◽  
Chi Square Test ◽  
Group A ◽  
Edentulous Patients ◽  
The Stability ◽  
Group B

Introduction: Resting tongue position is of crucial importance in the stability and retention of complete denture, particularly of the mandible. The retracted position of the tongue has been found to be higher in edentulous subjects when compared to dentate subjects and highest in completely edentulous individuals. Objectives: To evaluate the resting tongue position in completely edentulous as well as partially edentulous patients. Methods: 50 edentulous and 50 partially edentulous (mandible) subjects were taken. The edentulous group was divided into two groups according to the duration of edentulousness. Group A: Recently extracted edentulous subjects (< 1 year), Group B: Long term edentulous subjects (> 1 years). The partially edentulous group was divided into 4 groups according to Kennedy classification. The resting tongue positions of all the individuals were determined. The data was analyzed using SPSS statistical tests like mean, standard deviation, proportion, Chi-square test and Independent T-test. Results: In complete edentulous group, the abnormal upper was the most frequent (38%). In partial edentulous group, the normal lower was the most frequently observed tongue position with 34%. The abnormal tongue position was found in 68% and 40% in completely edentulous and partially edentulous subjects respectively. Conclusion: Retracted resting tongue position is found to be higher in completely edentulous subjects than partially edentulous ones.

Distribution of Molar Incisor Hypomineralization in Malaysian Children Attending University Dental Clinic

2015 ◽  
Vol 39 (3) ◽  
pp. 219-223 ◽  
Author(s):  
AS Hussein ◽  
M Faisal ◽  
M Haron ◽  
AM Ghanim ◽  
MI Abu-Hassan
Keyword(s):  
Descriptive Analysis ◽  
Age Groups ◽  
Dental Clinic ◽  
Chi Square ◽  
Permanent Molar ◽  
Molar Incisor Hypomineralization ◽  
Significant Difference ◽  
Permanent Molars ◽  
The Right ◽  
First Permanent Molars

Objectives: Molar-Incisor Hypomineralization (MIH) is a condition of hypomineralized enamel of systemic origin affecting first permanent molars and frequently permanent incisors. It is considered a global problem and data from South-East Asian countries, including Malaysia are lacking. Hence the aim of this study were to investigate the distribution and severity of MIH in a group of children aged 7-12 year olds attending pediatric dental clinic at Faculty of Dentistry, Universiti Teknologi MARA (UiTM), Malaysia. Study design: Hundred and fifty four children age 7-12 year-old with mean age of 9.14 ±1.682 had their first permanent molars and permanent incisors were examined at Faculty of Dentistry, UiTM using European Academy of Paediatric Dentistry 2003 (EAPD) criteria for diagnosis of MIH. Children at least one first permanent molar affected were considered as having MIH. Data were recorded and statistically analysed using descriptive analysis and Chi square test. Results: Twenty six of the total examined children (n=154) had MIH (16.9%). There was no statistical difference between males and females in the prevalence of MIH. However, a statistical significant difference was found by age groups. The first permanent molars were more frequently affected (58%) as compared to permanent incisors. Mandibular molars were to have the highest rate of MIH (15.5%). The right and left sides were equally affected. Mild defects were the most frequent lesion type (96.6%). Conclusions: This study revealed that MIH is a common condition (16.9%). Molars were more frequently affected than incisors with mild defects were the most common lesion status. Further studies on this defect amongst Malaysian children are worthwhile.

scholarly journals Effects of the intervention of the Multicenter Study IDEFICS on the prevalence of caries in Spanish children

2021 ◽  
Vol 20 ◽  
pp. e211359
Author(s):  
Vinícius Aguiar Lages ◽  
Maria Paula Rando Meirelles ◽  
Marília Jesus Batista ◽  
Carolina Matteussi Lino ◽  
Andréa Moscardini da Costa ◽  
...  
Keyword(s):  
Assessment System ◽  
Caries Detection ◽  
Chi Square ◽  
White Spots ◽  
Two Cities ◽  
Chi Square Test ◽  
Untreated Caries ◽  
Permanent Molars ◽  
Age Range ◽  
Do So

Aim: To evaluate the effects of an intervention for the prevention of obesity on the prevalence of dental caries disease in Spanish children. Methods: Two cities participated intervention study nested in a cohort IDEFICS (Identification and prevention of dietary and lifestyle induced health effects in children and infants): Huesca, where there was a 2-year intervention, which encouraged less sugar consumption; and Zaragoza (control). The prevalence of caries was evaluated by examining the 1st permanent molars in the 7-11 age range, using the ICDAS (International Caries Detection and Assessment System). These teeth erupt at 6 years of age and at the baseline (2007-2008) were free of caries because they were not present in the oral cavity. As outcomes, white spots were selected, combining the ICDAS criteria 1 and 2, and untreated caries, combining criteria 4, 5 and 6. Their association with socioeconomic variables, BMI (Body Mass Index), frequency of sugar intake, sex and parents’ perceptions of their children, was investigated. To do so, the chi-square test was applied (p<0.05). Results: The sample consisted of 281 children. The prevalence of white spots and untreated caries was higher in Huesca, despite the intervention. There was no association between the outcomes and the variables studied (p>0.05). Conclusion: The intervention for the prevention of obesity did not exert any association with the prevalence of caries in Spanish children.

Comparative Evaluation of Indirect Pulp Therapy in Young Permanent Teeth using Biodentine and Theracal: A Randomized Clinical Trial

2021 ◽  
Vol 45 (3) ◽  
pp. 158-164
Author(s):  
Bushra Rahman ◽  
Mousumi Goswami
Keyword(s):  
Clinical Trial ◽  
Randomized Clinical Trial ◽  
Permanent Teeth ◽  
Healthy Children ◽  
Chi Square ◽  
Significance Level ◽  
Pulp Therapy ◽  
Chi Square Test ◽  
Permanent Molars

Objective: In a tooth with deep dentinal caries; judicious removal of infected dentin and isolating affected dentin from oral fluids with suitable biocompatible material is called indirect pulp therapy (IPT). This randomized clinical trial was done to evaluate and compare the efficacy of Biodentine, Theracal LC and. Dycal as an indirect pulp capping agent in young permanent teeth. Study Design: IPT was performed in 60 young permanent molars with caries approaching pulp in 55 healthy children using Biodentine, Theracal and Dycal. A 2–3mm layer of GIC was placed over the intervening material followed by restoration of cavity with composite. Clinical and radiographic examinations were conducted at 3 weeks, 3 months, 6 months,12 months, 18 months and 24 months. The data was compared using chi-square test at a significance level of 0.05. Results: By end of 24 months ,54 teeth presented for follow up with overall success rate of 100% in Theracal, 94.44% in Biodentine, and 77.78% in Dycal. Overall success of Theracal was statistically significant in comparison to Biodentine and Dycal at 24 months follow up (p= 0.03) Conclusions: Radiographic and clinical outcomes of Theracal and Biodentine suggest their use as an alternative material for IPT in young permanent molars with higher success.

scholarly journals Association between Facial Type and Mandibular Canal Morphology - Analysis in Digital Panoramic Radiographs

2016 ◽  
Vol 27 (5) ◽  
pp. 609-612 ◽  
Author(s):  
Ana Paula Guidi Schmidt ◽  
◽  
Ana Cláudia Rossi ◽  
Alexandre Rodrigues Freire ◽  
Francisco Carlos Groppo ◽  
...  
Keyword(s):  
Root Apex ◽  
Mandibular Canal ◽  
Chi Square ◽  
Sample Distribution ◽  
Panoramic Radiographs ◽  
Chi Square Test ◽  
Permanent Molars ◽  
Facial Type

Abstract In this study we investigate the association between facial type and mandibular canal course morphology analysing this in digital panoramic radiographs images. We used 603 digital images from panoramic radiographs. We selected only panoramic radiographs of fully dentate individuals, who had all lower molars bilaterally and with complete root formation. The sample distribution was determined by facial type and sex. The course of the mandibular canal, as seen in the panoramic radiographs, was classified into 3 types, bilaterally. The classification used was: type 1 if the mandibular canal is in contact or is positioned at most 2 mm from the root apex of the three permanent molars; type 2 if the mandibular canal is located halfway between the root apex of the three permanent molars and a half away from the mandibular basis; and type 3 if the mandibular canal is in contact with or approaches, a maximum of 2 mm from the cortical bone of the mandibular basis. For results, the data were analyzed by Chi-square test (p<0.05). Data analysis (Chi-square) showed there were more canals type 2 (p=0.0012) and fewer canals type 1 (p=0.0336) in females than in males, without association with the facial types. In conclusion, the facial type does not associated with the mandibular canal course analyzed.

scholarly journals Comparative occlusal study analog and digital – a pilot study

2021 ◽  
Vol 67 (3) ◽  
pp. 170-176
Author(s):  
Smaranda Buduru ◽  
◽  
Manuela Taut ◽  
Cecilia Bacali ◽  
Manuela Manziuc ◽  
...  
Keyword(s):  
Diagnostic Methods ◽  
Dental Occlusion ◽  
P Value ◽  
Spearman Correlation ◽  
Microsoft Excel ◽  
Chi Square ◽  
Contact Points ◽  
Significant Difference ◽  
Chi Square Test ◽  
Examination Methods

The aim of this study was to determine whether or not the analysis of maximal intercuspation, protrusive and laterotrusive movements requires an additional digital method of occlusal diagnosis using the T-Scan™ Novus™ device (TekScan). In this observational study, we retrospectively examined a number of 10 subjects which were divided into 2 groups: the 1st group involved patients with intact dental arches and the 2nd group with patients that had received implant-supported restorations. The methods of analysis involved the calibrated articulating paper of 200 and 40 micrometers, and also the T-Scan™ Novus™ device (TekScan). The following data were collected: contact points in maximum intercuspation (functional and premature contacts), the pairs of teeth performing protrusion and right/left laterotrusion, active/passive interferences and premature contacts during protrusion and right/left laterotrusion. Descriptive statistics were obtained using the MedCalc Statistical Software version 19.2.6 (MedCalc Soft-ware bv, Ostend, Belgium) and Microsoft Excel for MAC 2011. It was tested if a statistically significant difference existed between the diagnostic methods regarding the number of contact points. The T test for independent samples without the assumption of equal variances and the Mann-Whitney test was used (to which we reported the medians of the 2 subgroups and the P value adjusted for equalities) and also the magnitude of association using the Chi-square test (p value) was measured. Also it was studied the correlation between the number of premature contacts and the number of contact points, respectively, obtained by each diagnostic method, and we expressed the results through the Spearman correlation coefficient. The analysis of the maximum intercuspation, of the protrusive and the laterotrusive movements has shown comparable results using the two examination methods. There were no statistically significant differences between the two methods of analyzing dental occlusion.

scholarly journals Activities of the Medical Commission during the Prophylactic Medical Examination of Athletes

2021 ◽  
Vol 6 (2) ◽  
pp. 149-153
Author(s):  
I. A. Vlasova ◽  
D. G. Gubin
Keyword(s):  
Physical Training ◽  
The State ◽  
The Body ◽  
Medical Examination ◽  
Medical Documentation ◽  
Chi Square ◽  
Intensive Training ◽  
Chi Square Test ◽  
The Stability ◽  
Levels Of Functioning

Background. Preserving the health of the population, including those involved in sports, is one of the priority directions of the state policy of the Russian Federation. In accordance with the existing legislative and regulatory framework, a system for monitoring the quality and safety of medical care is being implemented in health care institutions, which also applies to medical and physical training services. One of the levels of functioning of such a system is the activity of the medical commission. Intensive training and competitive loads make increased demands on the body and are considered a risk factor for the health of athletes, which serves as the basis for their in-depth medical examination and dispensary observation. Therefore, the primary task of the medical commission during the prophylactic medical examination of athletes is to issue an expert opinion in difficult cases regarding the training and competitive activity of persons with deviations in the state of health.The objective of the research was to study of the activities of the medical commission during the prophylactic medical examination of athletes in the conditions of a medical and physical service on the basis of a scientific analysis of the results of its work for two years.Materials and methods. We studied the medical documentation of athletes who passed the medical commission for two years (2018–2019; n = 82 and n = 81, respectively). The nature of the decisions made and the structure of their reasons were analyzed using the Pearson chi-square test with amendments.Results. The share of positive and negative decisions of the commission, as well as temporary suspension from sports by years, their statistical dependences and the strength of the connection between the results are shown. The stability of the negative conclusions of the commission, as well as the structure of their reasons, was revealed (р ˃ 0.05). At the same time, in the second year of observation, they were more often temporarily suspended from sports due to musculoskeletal system diseases and less often as a result of injuries (p < 0.05).Conclusion. The main regularities of the distribution and formation of expert decisions of the medical commission for the years under study were revealed. The necessity of its activity for the medical and physical training service during the medical examination of athletes is noted, as well as the factors that prevent this are indicated. 

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