scholarly journals Quantifying the Selection of Maxillary Anterior Teeth Using Intraoral and Extraoral Anatomical Landmarks

2011 ◽  
Vol 12 (6) ◽  
pp. 414-421 ◽  
Author(s):  
Ayman Ellakwa ◽  
Kieran McNamara ◽  
Jasdeep Sandhu ◽  
Kedall James ◽  
Amit Arora ◽  
...  
Keyword(s):  
Selection Criteria ◽  
Average Length ◽  
Maxillary Incisor ◽  
Anatomical Landmarks ◽  
Cross Sectional ◽  
Mean Values ◽  
Anterior Teeth ◽  
Dental Practitioners ◽  
The Mean ◽  
Selection Of

ABSTRACT Background One of the major hurdles in clinical prosthodontics has been the selection and replacement of maxillary anterior teeth in the absence of pre-extraction records. The aim of this study was to determine if a relationship exists between intraoral and extraoral facial measurements that could assist dental practitioners in selecting esthetically appropriate maxillary anterior teeth in the absence of pre-extraction records. Materials and methods A cross-sectional study design was used with a sample size of one hundred and twenty participants. A questionnaire was used to identify the selection criteria and a photograph was taken for facial measurements using digitally calibrated software. Ninety-eight participants met the selection criteria and were included in the study. Measurements of intraoral landmarks were taken from stone casts of maxillary impressions using calibrated digital calipers. Each measurement was completed by two assessors to obtain mean values. Data were statistically analyzed using SPSS version 17 software. Data were assessed by one way analysis of variance (ANOVA) followed by post hoc (p < 0.05) to find any difference between tested groups. Pearson coefficients were used to determine whether correlation exists between measurements. Results The mean values for intraoral maxillary landmarks were: Central incisor width = 8.39 mm, circumferential canine tip to canine tip distance = 34.89 mm, arch width = 48.24 mm, left arch length = 45.24 mm, right arch length = 45.56 mm. The mean values for extraoral landmarks were: Intercanthal distance = 33.24 mm, interpupillary distance = 60.68 mm, interalar distance = 38.27 mm, intercommissure distance = 50.61 mm. Differences existed within subgroups for all intraoral and extraoral measures. A weak positive correlation existed between intraoral (r < 0.4) and extraoral measurements (r < 0.38) that remained consistent when examined by gender. Conclusion This study showed that the average length and width of the maxillary arch and interalar width were the anatomical landmarks that provided the strongest predictive relationship with anterior maxillary teeth (r = 0.38 – 0.4). Using these dimensions an average multiplying factor can be used to calculate maxillary incisor width or canine tip to canine tip distance. As the predictive strength is not strong, the authors recommend its use as a preliminary guide for determining the width of the maxillary anterior teeth during the initial selection of artificial teeth in the absence of pre-extraction records. Clinical Significance The results of this study can be used to help dentists select the size of artificial maxillary anterior teeth in the absence of pre-extraction records. How to cite this article Ellakwa A, McNamara K, Sandhu J, James K, Arora A, Klineberg I, El-Sheikh A, Martin FE. Quantifying the Selection of Maxillary Anterior Teeth Using Intraoral and Extraoral Anatomical Landmarks. J Contemp Dent Pract 2011;12(6):414-421.

ANATOMICAL STUDY OF MANDIBULAR FORAMEN IN DRY ADULT HUMAN MANDIBLES IN BIHAR STATE REGION

2021 ◽  
pp. 34-36
Author(s):  
Vijay Kumar Singh ◽  
Md. Zahid Hussain ◽  
Subodh Kumar
Keyword(s):  
Local Population ◽  
Inferior Alveolar Nerve ◽  
P Value ◽  
Anatomical Landmarks ◽  
Mandibular Ramus ◽  
Cross Sectional ◽  
Mean Values ◽  
Mandibular Foramen ◽  
Adult Human ◽  
The Mean

Background: The morphological knowledge of the mandibular foramen is very important during dental procedures involving lower jaw, as structures that pass through this foramen are at risk. Inferior alveolar nerve (IAN) block is the most frequently used nerve block technique in dental practice. Location of mandibular foramen is clinically important in Inferior alveolar nerve (IAN) block, dentoalveolar surgery planning, and various endodontic treatments. Present study aimed to locate the precise location of mandibular foramen in relation to the borders of the mandibular ramus, its distances from different bone landmarks on internal surface of ramus of dry mandible and incidence of occurrence of accessory mandibular foramen in local population. Material And Methods: Present study was a cross-sectional study of 50 (fty) dry adult human mandibles, obtained from the dissection room of the department of Anatomy, NMCH, Patna, Bihar. Location of MF(Mandibular foramen) from various parameters was determined with digital Vernier calipers. The presence of accessory mandibular foramen in and around mandibular foramen on the medial surface of mandibular ramus was by simple visual observation with the help of a magnifying lens and their prevalence rate was noted. All the above parameters were carefully documented and statistically analysed. Statistical analysis was done using SPSS version 23. Student's t test was used as test of signicance to compare the mean values of right and left sides and a P-value less than 0.05 was taken to be statistically signicant. Results: Total 50 dry adult human mandibles were studied. The mean distance of mandibular foramina to anterior border of ramus was 16.97 ± 2.13 (R) mm and 17.04 ± 2.72mm(L), to posterior border was (R): 13.73 ± 2.28 mm and (L): 14.16 ± 2. 05 mm, to mandibular notch was (R): 20.50 ± 2.11 mm and (L): 20.10 ± 2.82 mm and to inferior border was (R): 26.93 ± 3.09 mm and (L): 26.37 ± 4.25 mm. We noted that there was no signicant difference in the values on the right and left sides (p>0.05). All mandibles (100%) have bilateral mandibular foramen. Unilaterally Single Accessory mandibular foramen was present in 11 (22%) mandibles. Unilaterally double accessory mandibular foramen was present in 06 (12%). Bilateral double accessory mandibular foramen was noted in 02(04%) mandibles only. Bilateral single accessory mandibular foramen was noted in 04(08%) mandibles. Conclusion: Present study provides valuable information regarding distances between mandibular foramen and surgically encountered anatomical landmarks, which is very useful to dental surgeons.

PERIODONTAL DISEASE STATUS, KNOWLEDGE, ATTITUDE, PRACTICE AND TREATMENT NEEDS OF PREGNANT WOMEN

2018 ◽  
Vol 8 (6) ◽  
pp. 138-144
Author(s):  
Thien Nguyen Duc ◽  
Tai Tran Tan
Keyword(s):  
Periodontal Disease ◽  
Pregnant Women ◽  
Oral Hygiene ◽  
Disease Status ◽  
Incidence Rates ◽  
Gestation Period ◽  
Treatment Needs ◽  
Cross Sectional ◽  
Mean Values ◽  
The Mean

Background: Periodontal disease is a prominent and important issue of public health, especially in pregnant women. The objective of this study is to describe the clinical characteristics; learn knowledge, attitudes, practice oral hygiene and assess the need for treatment of periodontal disease in pregnant women. Subjects and Methods: A cross-sectional study of 210 pregnant women who visited the Department of Obstetrics and Gynecology at the Hue University of Medicine and Pharmacy Hospital. Clinical examination and interview questions on knowledge, attitudes and practice of oral care for all subjects. Results: The incidence of gingivitis was 100%, with mild gingivitis of 4,3% and moderate gingivitis of 95.7%. There was a difference in incidence rates of gingivitis in the gestational period (p<0.001). The incidence of periodontitis is 17.6% and there is no difference in gestational age (p>0.05). The mean values of GI and BOP indices differed by gestation period (p<0.05) and PD, OHI-S, PlI have statistically significant relationship with gestation period (p>0.05). The incidence of periodontal disease is 80.5%; The percentage of pregnant women who abstain from brushing their teeth after birth is 61.4%. Prevalence of brushing once a day: 7.1%; Twice a day: 70.5% and 3 times daily: 22.4%; The mean values of GI, PD, BOP, OHI-S and PlI were inversely proportional to the number of brushing (p<0.001). The rate of dental hygiene is just 3.3%; The rate of oral hygiene, dental plaque and plaque removal was 94,3%; The proportion of subjects required for intensive treatment is 2.4%. Conclusion: Periodontal disease, especially for pregnant women, is high. It is necessary to educate the knowledge, attitudes and practice of proper oral hygiene and to better meet the demand for periodontal disease treatment for pregnant women. Key words: Periodontal disease, pregnant women, knowledge, attitude, practice for oral hygiene, treatment needs

Effect of Medialization of the Trochlear Groove and Lateralization of the Tibial Tubercle on TT-TG Distance: A Cross-sectional Study of Dysplastic and Nondysplastic Knees

2021 ◽  
pp. 036354652098781
Author(s):  
Mathias Paiva ◽  
Lars Blønd ◽  
Per Hölmich ◽  
Kristoffer Weisskirchner Barfod
Keyword(s):  
Trochlear Dysplasia ◽  
Cross Sectional Study ◽  
Magnetic Resonance Images ◽  
Tibial Tubercle ◽  
Control Group ◽  
Trochlear Groove ◽  
Sectional Study ◽  
Cross Sectional ◽  
Mean Values ◽  
The Mean

Background: Tibial tubercle–trochlear groove (TT-TG) distance is often used as a measure of lateralization of the TT and is important for surgical planning. Purpose: To investigate if increased TT-TG distance measured on axial magnetic resonance images is due to lateralization of the TT or medialization of the TG. Study Design: Cross-sectional study; Level of evidence, 3. Methods: A total of 84 knees (28 normal [NK], 28 with trochlear dysplasia [TD], and 28 with patellar dislocation without TD [PD]) were examined. The medial border of the posterior cruciate ligament (PCL) was chosen as the central anatomic landmark. The distance from the TT to PCL (TT-PCL) was measured to examine the lateralization of the TT. The distance from the TG to the PCL (TG-PCL) was measured to examine the medialization of the TG. Between-group differences were investigated by use of 1-way analysis of variance. Results: The mean values for TT-TG distance were 8.7 ± 3.6 mm for NK, 12.1 ± 6.0 mm for PD, and 16.7 ± 4.3 mm in the TD group ( P < .01). The mean values for TT-PCL distance were 18.5 ± 3.6 mm for NK, 18.5 ± 4.5 mm for PD, and 21.2 ± 4.2 mm in the TD group ( P = .03). The mean values for TG-PCL distance were 9.6 ± 3.0 mm for NK, 7.1 ± 3.4 mm for PD, and 5.1 ± 3.3 mm in the dysplastic group ( P < .01). Conclusion: The present results indicate that increased TT-TG distance is due to medialization of the TG and not lateralization of the TT. Knees with TD had increased TT-TG distance compared with the knees of the control group and the knees with PD. The TT-PCL distance did not differ significantly between groups, whereas the TG-PCL distance declined with increased TT-TG.

Comparison of Working Length Determination in Mandibular Single-Rooted Teeth

2021 ◽  
Vol 8 (2) ◽  
pp. 19-23
Author(s):  
Ruqayya Sana ◽  
Farzana Rehman ◽  
Farzana Rehman ◽  
Rashid Javaid
Keyword(s):  
Sampling Technique ◽  
Cross Sectional Study ◽  
Study Data ◽  
Inclusion Criteria ◽  
Cross Sectional ◽  
Conventional Radiograph ◽  
Anterior Teeth ◽  
Working Length ◽  
The Mean ◽  
Electronic Apex Locator

OBJECTIVES: The objective of this study was to compare working length calculated with conventional radiographs and an electronic apex locator (IPEX II) during the root canal treatment of mandibular anterior teeth. METHODOLOGY: A cross-sectional study was done in the Department of Operative Dentistry, Sardar Begum Dental Hospital, Peshawar during February and March 2018. A consecutive sampling technique was used for sampling. Only 30 patients fulfilled the inclusion criteria of our study. Detailed medical and dental history was taken. Only patient fulfilling inclusion criteria were enrolled in the study. Data were analyzed using SPSS version 20. RESULTS: The mean age for patients was 45.33±5.16. 33% out of 30 patients (10) were male and 20 were females. The mean working length calculated from radiographs was 22.25±1.29 (min 20.09-max 24.10). The mean working length calculated by the electronic apex locator (IPEX II) was 22.17±1.28 (min 20.00-max 24.07). The mean difference between working length calculated by radiograph and electronic apex locator was -0.084mm, which means the working length determined by radiographs and by electronic apex locator has no difference in mandibular anterior teeth with single canals. CONCLUSION: Both the methods can be used effectively in endodontics for single-rooted mandibular teeth, but if both are used in combinations can lead to an improvement in the working length accuracy, which may significantly reduce the number of radiographs exposure, and increase the success and comfort for endodontic patients. KEYWORDS: Working Length, Apex Locator, Conventional Radiograph

scholarly journals Comparison of clinical and biochemical variables in type 2 diabetes mellitus patients and their first-degree relatives with metabolic syndrome in Benin City, Nigeria: A cross sectional case controlled study

2016 ◽  
Vol 50 (1) ◽  
pp. 32-40 ◽  
Author(s):  
S Ogedengbe ◽  
IU Ezeani ◽  
E Aihanuwa
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Metabolic Syndrome ◽  
Metabolic Abnormalities ◽  
Cross Sectional ◽  
Mean Values ◽  
Who Criteria ◽  
Benin City ◽  
The Mean

AbstractObjective. Type 2 diabetes mellitus (T2DM) is characterized by a relative insulin deficiency or insulin resistance. It is also associated with a cluster of metabolic abnormalities, including hyper-tension and dyslipidemia. Although there are many studies that have studied the metabolic abnormalities in T2DM patients with metabolic syndrome (MetS), only few of them have assessed the metabolic abnormalities in their first-degree relatives (FDRs) who had MetS. The aim of this study is to compare the clinical and biochemical variables in T2DM subjects and their FDRs without diabetes in Benin City, Nigeria.Methods. This is a cross sectional case control study including 124 T2DM patients, 96 FDR of T2DM subjects, and 96 controls recruited using convenience sampling. Data were collected using a questionnaire-administered technique. Variables of interest that were assessed included anthropometric indices like waist circumference (WC), hip circumference (HC), waist:hip ratio (WHR), body mass index (BMI), systolic blood pressure (SBP), diastolic blood pressure (DBP), serum lipid profile, fasting plasma glucose (FPG), hemoglobin A1c (HbA1c), proteinuria, and microalbuminuria. The 1999 World Health Organization (WHO) criteria were used to make a diagnosis of metabolic syndrome. The Chi-square test was used for comparison of proportions. P-value of less than 0.05 was taken as statistically significant. The student t-test was used to compare means and test for significant differences in the anthropometric and the metabolic indices.Results. The prevalence of the MetS in T2DM persons was 87.1%, 16.7% in the FDR group, and 13.5% in the control group according to the WHO criteria. The mean value of HbA1c was significantly higher in T2DM subjects with MetS (p<0.05). The mean values of WC, FPG, total cholesterol, HDL cholesterol, and LDL cholesterol were higher in subjects with MetS in the T2DM group than in persons with MetS in the FDR group though not significant (p>0.05). The mean values of WHR, BMI, SBP, DBP, and triglyceride were higher in persons with the MetS in the FDR group than in persons with the MetS in the T2DM group. The difference in the BMI and SBP was significant (p<0.05).Conclusion. The prevalence of MetS in subjects with T2DM in Nigeria is very high. Though, all the biochemical and clinical indices were higher in T2DM subjects with MetS, the mean HbA1c, BMI, and SBP was significantly higher when compared to their FDR who also have MetS.

scholarly journals Association between Nutritional Status Determined By Mini Nutritional Assessment and Serum Marker Levels in Older Adults at Eldercare Facilities

2015 ◽  
Vol 1 (1) ◽  
Author(s):  
Angel G Hilerio Lopez
Keyword(s):  
Older Adults ◽  
At Risk ◽  
Nutritional Status ◽  
Nutritional Assessment ◽  
Mini Nutritional Assessment ◽  
Serum Marker ◽  
Cross Sectional ◽  
Mean Values ◽  
Significant Difference ◽  
The Mean

Malnutrition in the older adult is an ongoing situation in Mexico and is most apparent in individuals that reside in hospitals, nursing homes, and retirement homes. For that reason, it is necessary to evaluate the nutritional status of these adults by means of the Mini Nutritional Assessment (MNA) and levels of three serum indicators that are commonly ordered when making malnutrition diagnosis. An analytical cross-sectional study was carried out on 100 older adults residing in eldercare facilities. Nutritional status was evaluated by means of the MNA and three serum indicators (albumin, ferritin, and hemoglobin). Descriptive statistics were used to analyze sociodemographic characteristics, and a Student’s t test, based on gender and reference values, was used to compare mean values of the three serum indicators.  A Chi-square test was used to compare proportions in individuals, based on gender, who had normal nutritional status or were malnourished, and who were at-risk of malnutrition.  A One-way ANOVA with Scheffé post hoc test was used to identify the association between serum indicators and nutritional status of older adults. Of the 100 older adults studied, 53% were men and 47% were women. The mean age was 85±0.7 years. According to the MNA, 20% had normal nutritional status, 55% were at-risk of malnutrition, and 25% were malnourished. The mean indicator values were: albumin 4.7±0.04 g/dL, ferritin 74.2±8.7 ng/mL, and hemoglobin 13.0±0.1 g/dL. No significant association was found between serum indicators and each MNA classification; however, when the same indicators were compared between the sexes, hemoglobin showed a significant difference (P=0.037). Women had lower values but those values did not extend beyond the established physiological range for this population. There was a 55% prevalence of risk of malnutrition in the nutritional status of older adults living in Mexican eldercare facilities in a Mexican province and it was even more frequent in women. 

scholarly journals Genetic homozygosity as a marker of smoking dependency

Genetika ◽  
2020 ◽  
Vol 52 (3) ◽  
pp. 1009-1019
Author(s):  
Slavko Brankovic ◽  
Dejan Nikolic ◽  
Dragoslav Marinkovic ◽  
Suzana Cvjeticanin
Keyword(s):  
Cross Sectional Study ◽  
Male Gender ◽  
Sectional Study ◽  
Cross Sectional ◽  
Male And Female ◽  
Mean Values ◽  
Individual Variations ◽  
Significant Difference ◽  
The Mean ◽  
The Individual

The aim of our study was to evaluate the morphogenetic variability as a marker of smoking dependency in adult smokers versus controls and to investigate the presence and the degree of morphogenetic variability difference between male and female smokers versus same gender controls. The cross-sectional study evaluated 241 smokers and 185 nonsmoker individuals as controls. We analyzed 17 homozygous recessive characteristics (HRC). There was a significant difference in the individual variations of 17 HRCs between the controls and smokers (??2=61.400, p<0.001; for females ??2=79.440, p<0.001; for males ??2=84.972, p<0.001). The mean values of HRCs significantly differed between smokers and controls (MV?SEM(Controls) -4.79?0.13, MV?SEM(Smokers) -5.70?0.12; p<0.001). For males, presence of 6/17 (35.29% genetic homozygosity) HRCs (OR=6.12) was to the certain degree predictor for smoking dependency. Higher degree of genetic homozygosity, changed variability and male gender, might be some among potential numerous factors that could have impact on smoking development and dependence.

A study of growth changes in the mandible from deciduous to permanent dentition

2004 ◽  
Vol 27 (2) ◽  
pp. 137-142 ◽  
Author(s):  
Hung-Huey Tsai
Keyword(s):  
Cross Sectional Study ◽  
Permanent Dentition ◽  
Developmental Changes ◽  
Sectional Study ◽  
Cross Sectional ◽  
Mean Values ◽  
Males And Females ◽  
The Mean ◽  
Growth Changes ◽  
Ramus Height

This cross-sectional study investigated mandibular developmental changes in untreated normal Taiwanese from the deciduous to permanent dentition. Differences in the mean values for ramus height and body length between males and females were statistically significant after eruption of the permanent second molars. SNB angles significantly increased and gonial and L1-MP angles significantly decreased from deciduous to permanent dentition in both sexes. The SN-MP angle in females significantly decreased and ramus inclination in males significantly increased from the early mixed to permanent dentition.

Influence of selection criteria on clients’ satisfaction with construction consultancy services in Nigeria

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Chukwuemeka Patrick Ogbu ◽  
Monday Omogiate Imafidon
Keyword(s):  
Selection Criteria ◽  
Client Satisfaction ◽  
Cross Sectional Survey ◽  
Cross Sectional ◽  
Firm Reputation ◽  
Content Type ◽  
Importance Index ◽  
Tender Evaluation ◽  
To Receive ◽  
Selection Of

Purpose To receive a satisfactory consultancy service, a construction client must first select suitable consultants. While numerous criteria for the selection of construction consultants have been suggested in the literature, their influence on client satisfaction has hardly been statistically established. This study aimed to reduce the criteria for the selection of construction consultants into a more manageable set of fewer factors and ascertain the influence of the factors on client satisfaction. Design/methodology/approach Data were gathered through a purposively administered cross-sectional survey of public sector clients in Nigeria. Analyzes were done using relative importance index, factor analysis and multiple regression analysis. Findings The results proved that the criteria for the selection of consultants can, in the order of decreasing influence on client satisfaction, be grouped into service delivery approach (SDA), relationship with the client, the caliber of personnel, firm reputation and firm certification. However, SDA is more influential on client satisfaction. All the factors were found to have significant statistical effects on clients’ overall satisfaction with consultancy services. Originality/value The study demonstrates the extent to which construction consultant selection criteria are relevant to client satisfaction. It shows that SDA is the most important predictor of clients’ satisfaction with consultancy services. The results are helpful for grouping consultant selection criteria in future studies, and in guiding clients on the weights to assign to consultant selection criteria during tender evaluation.

scholarly journals Observations on dentine hypersensitivity in general dental practices in the United Arab Emirates

2013 ◽  
Vol 07 (04) ◽  
pp. 389-394 ◽  
Author(s):  
Hasanain Al-Khafaji
Keyword(s):  
United Arab Emirates ◽  
Cross Sectional Study ◽  
Tooth Surface ◽  
Cross Sectional ◽  
Dentine Hypersensitivity ◽  
Etiological Factors ◽  
Anterior Teeth ◽  
Dental Practitioners ◽  
Common Etiology ◽  
Common Clinical Finding

ABSTRACTDentine hypersensitivity is a common clinical finding with a wide variation in prevalence values and etiological factors. The objective of this cross-sectional study was to investigate the prevalence and some etiological factors of dentine hypersensitivity of Emirati patients visiting general dental clinics in the United Arab Emirates (UAE) over a period of three calendar months. Materials and Methods: Six general dental practitioners examined 204 Emirati patients over a period of three calendar months and patients who had dentine hypersensitivity diagnosed were questioned further about their smoking habits and the frequency, severity, and duration of their pain. Furthermore, cervical tooth surface loss was noted. Results: A total of 55 patients were diagnosed as having dentine hypersensitivity, giving a prevalence figure of 27%. The most common teeth affected were the lower anterior teeth. Conclusions: The prevalence of dentine hypersensitivity in Emirati patients visiting a general dental clinic in the UAE was 27%. The most common etiology appeared to be the loss of cervical tooth surface structure.

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