Pub Date : 2019-08-28DOI: 10.15406/jdhodt.2019.10.00494
M. Goldberg
The protein gene family includes extracellular molecules (ECM) proteins, responsible for dentin/bone coding (DSPP, DMP1, IBSP, MEPE, and SPP1), enamel (AMEL, ENAM, AMBN, and AMTN), as well as milk casein, and some salivary protein genes (Table 1). These molecules encompass inherited defects of dental enamel (AI) and dentin (DI and DD). They display both clinical and genetic heterogeneity. These groups include different sub-types recognized on the basis of their clinical appearance. Diseases affecting tooth structures have been classified into distinct tissues [enamel (AI) versus dentin (DI & DD), the specificity of the mutation (syndromic versus non-syndromic), and their pattern of inheritance [autosomal dominant (AD), autosomal recessive (AR), or X-linked recessive (XLR)]. Mutations in the AMELX , ENAM , MMP20 and KLK4 genes are associated with specific AI types. Another series of gene mutations influence dentin structure and composition [dentinogenesis imperfecta (DI) and dentin dysplasia (DD)]. These mutated genes are implicated in defective dental tissues.1–3
{"title":"Genetic and structural alterations of enamel and dentin- amelogenesis imperfecta, dentinogenesis imperfecta and dentin dysplasia","authors":"M. Goldberg","doi":"10.15406/jdhodt.2019.10.00494","DOIUrl":"https://doi.org/10.15406/jdhodt.2019.10.00494","url":null,"abstract":"The protein gene family includes extracellular molecules (ECM) proteins, responsible for dentin/bone coding (DSPP, DMP1, IBSP, MEPE, and SPP1), enamel (AMEL, ENAM, AMBN, and AMTN), as well as milk casein, and some salivary protein genes (Table 1). These molecules encompass inherited defects of dental enamel (AI) and dentin (DI and DD). They display both clinical and genetic heterogeneity. These groups include different sub-types recognized on the basis of their clinical appearance. Diseases affecting tooth structures have been classified into distinct tissues [enamel (AI) versus dentin (DI & DD), the specificity of the mutation (syndromic versus non-syndromic), and their pattern of inheritance [autosomal dominant (AD), autosomal recessive (AR), or X-linked recessive (XLR)]. Mutations in the AMELX , ENAM , MMP20 and KLK4 genes are associated with specific AI types. Another series of gene mutations influence dentin structure and composition [dentinogenesis imperfecta (DI) and dentin dysplasia (DD)]. These mutated genes are implicated in defective dental tissues.1–3","PeriodicalId":15598,"journal":{"name":"Journal of dental health, oral disorders & therapy","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75500307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-08-09DOI: 10.15406/jdhodt.2019.10.00493
Cruz-Vargas Lizbet Adriana, M. Guadalupe, González-Ramírez Alejandro de Jesús, Ce. Isaac, Galindo-Reyes Lilia Edith, Suárez-Franco José Luis
Sleep is a brain function. During sleep, control of respiration goes from being a semi-voluntary act to becoming a self-regulatory activity of highest biological priority. There are diverse physiological functions that the dream favors or allows and that are modified or suppressed after their deprivation as it is the conservation of energy; cerebral thermoregulation; cerebral detoxification; tissue restoration, memory and apprentice.1,2
{"title":"Determination of obstructive sleep apnea through the epworth test and cephalometry","authors":"Cruz-Vargas Lizbet Adriana, M. Guadalupe, González-Ramírez Alejandro de Jesús, Ce. Isaac, Galindo-Reyes Lilia Edith, Suárez-Franco José Luis","doi":"10.15406/jdhodt.2019.10.00493","DOIUrl":"https://doi.org/10.15406/jdhodt.2019.10.00493","url":null,"abstract":"Sleep is a brain function. During sleep, control of respiration goes from being a semi-voluntary act to becoming a self-regulatory activity of highest biological priority. There are diverse physiological functions that the dream favors or allows and that are modified or suppressed after their deprivation as it is the conservation of energy; cerebral thermoregulation; cerebral detoxification; tissue restoration, memory and apprentice.1,2","PeriodicalId":15598,"journal":{"name":"Journal of dental health, oral disorders & therapy","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74815209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-08-08DOI: 10.15406/jdhodt.2019.10.00492
Sara Alshammery, N. Alturki, M. Alomran
treatment of these diseases requires an understanding of and, at times, modifying the child’s and family’s response to care. Behavior guidance is the process by which practitioners help patients identify appropriate and inappropriate behavior, learn problem solving strategies, and develop impulse control, empathy, and self-esteem. This process is a continuum of interaction involving the dentist and dental team, the patient, and the parent; its goals are to establish communication, alleviate fear and anxiety, deliver quality dental care, build a trusting relationship between dentist/staff and child/ parent, and promote the child’s positive attitude toward oral health care. Knowledge of the scientific basis of behavior guidance and skills in communication, empathy, tolerance, cultural sensitivity, and flexibility are requisite to proper implementation. Behavior guidance should never be punishment for misbehavior, power assertion, or use of any strategy that hurts, shames, or belittles a patient.
{"title":"Is it better to restore or extract deciduous teeth- a survey","authors":"Sara Alshammery, N. Alturki, M. Alomran","doi":"10.15406/jdhodt.2019.10.00492","DOIUrl":"https://doi.org/10.15406/jdhodt.2019.10.00492","url":null,"abstract":"treatment of these diseases requires an understanding of and, at times, modifying the child’s and family’s response to care. Behavior guidance is the process by which practitioners help patients identify appropriate and inappropriate behavior, learn problem solving strategies, and develop impulse control, empathy, and self-esteem. This process is a continuum of interaction involving the dentist and dental team, the patient, and the parent; its goals are to establish communication, alleviate fear and anxiety, deliver quality dental care, build a trusting relationship between dentist/staff and child/ parent, and promote the child’s positive attitude toward oral health care. Knowledge of the scientific basis of behavior guidance and skills in communication, empathy, tolerance, cultural sensitivity, and flexibility are requisite to proper implementation. Behavior guidance should never be punishment for misbehavior, power assertion, or use of any strategy that hurts, shames, or belittles a patient.","PeriodicalId":15598,"journal":{"name":"Journal of dental health, oral disorders & therapy","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78905807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Objectives: To identify any correlation and its severity with the levels of serum vitamin D with the level of maxillary sinus pneumatization. Study Design: Descriptive cross-sectional survey. Setting: Oral and Maxillofacial Department, Fatima Memorial Hospital, Lahore. Materials and Methods: A sample size of 100 subjects met the inclusion criteria. Serum Vitamin D levels of the patients was done using liquid chromatography tandem mass spectrometry, also known as LC/MS/MS. While level of sinus pneumatization was recorded according to Sharan and Majdar classification of maxillary sinus pneumatization. Data was collected and entered into the Statistical Package for Social Science (SPSS) version 25.0 for analysis. Parametric analysis was performed that included the Pearson’s Chi- Square test to determine an association between excessive maxillary sinus pneumatization and hypovitaminosis. A p-value of <0.05 was defined as the level of significance. Results: A statistically significant relationship was found between levels of hypovitaminosis and levels of pneumatization with a chi square value to be 0.002 (p<0.05) While there was no statistically significant relationship of age or gender with levels of maxillary sinus pneumatization and hypovitaminosis D (p>0.05). Conclusion: There is a significant relationship between levels of hypovitaminosis and levels of pneumatisation.
{"title":"Maxillary Sinus Pneumatization and Its Relationship with Vitamin D Deficiency; A\u0000Cross Sectional Study","authors":"","doi":"10.33140/jodh.03.02.5","DOIUrl":"https://doi.org/10.33140/jodh.03.02.5","url":null,"abstract":"Objectives: To identify any correlation and its severity with the levels of serum vitamin D with the level of maxillary\u0000sinus pneumatization.\u0000Study Design: Descriptive cross-sectional survey.\u0000Setting: Oral and Maxillofacial Department, Fatima Memorial Hospital, Lahore.\u0000Materials and Methods: A sample size of 100 subjects met the inclusion criteria. Serum Vitamin D levels of the patients\u0000was done using liquid chromatography tandem mass spectrometry, also known as LC/MS/MS. While level of sinus\u0000pneumatization was recorded according to Sharan and Majdar classification of maxillary sinus pneumatization. Data\u0000was collected and entered into the Statistical Package for Social Science (SPSS) version 25.0 for analysis. Parametric\u0000analysis was performed that included the Pearson’s Chi- Square test to determine an association between excessive\u0000maxillary sinus pneumatization and hypovitaminosis. A p-value of <0.05 was defined as the level of significance.\u0000Results: A statistically significant relationship was found between levels of hypovitaminosis and levels of pneumatization\u0000with a chi square value to be 0.002 (p<0.05) While there was no statistically significant relationship of age or gender\u0000with levels of maxillary sinus pneumatization and hypovitaminosis D (p>0.05).\u0000Conclusion: There is a significant relationship between levels of hypovitaminosis and levels of pneumatisation.","PeriodicalId":15598,"journal":{"name":"Journal of dental health, oral disorders & therapy","volume":"88 14","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91403433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-07-24DOI: 10.15406/jdhodt.2019.10.00490
Vieira Lucas PL, Ávila Gisseli B, Franco Aline BG, Franco Amanda G, Carvalho Geraldo AP, D. Sérgio C, Ramos Elimário V
The aim of this study is to assess the marginal adaptation of different ceramic materials produced by the CEREC system (Sirona, Germany). An analog of the solid abutment Straumann (Straumann, Basel, Switzerland) measuring 5.5mm of height, with platform of 4.8mm, tilt from the axial wall of 6 degrees and chamfer finish line was used as a master model and scanned with an intraoral scanner (CEREC Omnicam). 20 machined crowns were obtained - 10 manufactured from lithium disilicate blocks (IpsE.maxCad, IvoclarVivadent, Liechtenstein, Germany), 10 manufactured from nanoceramic resin blocks (3M ESPE Lava Utimate, USA). The assessment was made using the Replica Technique (RT) and the cementation coating was measured using an optical microscope Mitutoyo (TM 500). Results show a mean marginal disadaptation of lithium disilicate crowns of 78.63µm, which is significantly larger than the one found for nanoceramic resin crowns - 63.15µm. It is possible to conclude that nanoceramic resin crowns have a better marginal adaptation than lithium disilicate ones. Notwithstanding, results found for both groups are within the clinically acceptable values for indirect restorations.
{"title":"Assessment of marginal adaptation of lithium disilicate and nanoceramic resin crowns using CAD/CAM system","authors":"Vieira Lucas PL, Ávila Gisseli B, Franco Aline BG, Franco Amanda G, Carvalho Geraldo AP, D. Sérgio C, Ramos Elimário V","doi":"10.15406/jdhodt.2019.10.00490","DOIUrl":"https://doi.org/10.15406/jdhodt.2019.10.00490","url":null,"abstract":"The aim of this study is to assess the marginal adaptation of different ceramic materials produced by the CEREC system (Sirona, Germany). An analog of the solid abutment Straumann (Straumann, Basel, Switzerland) measuring 5.5mm of height, with platform of 4.8mm, tilt from the axial wall of 6 degrees and chamfer finish line was used as a master model and scanned with an intraoral scanner (CEREC Omnicam). 20 machined crowns were obtained - 10 manufactured from lithium disilicate blocks (IpsE.maxCad, IvoclarVivadent, Liechtenstein, Germany), 10 manufactured from nanoceramic resin blocks (3M ESPE Lava Utimate, USA). The assessment was made using the Replica Technique (RT) and the cementation coating was measured using an optical microscope Mitutoyo (TM 500). Results show a mean marginal disadaptation of lithium disilicate crowns of 78.63µm, which is significantly larger than the one found for nanoceramic resin crowns - 63.15µm. It is possible to conclude that nanoceramic resin crowns have a better marginal adaptation than lithium disilicate ones. Notwithstanding, results found for both groups are within the clinically acceptable values for indirect restorations.","PeriodicalId":15598,"journal":{"name":"Journal of dental health, oral disorders & therapy","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85767057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Introduction: The objective of the study was to make the comparison of the root canal length of different types of teeth in black-Africans (Bantu) to that of Caucasians and Asians. Materials and Methods: Data from a prospective cross-sectional study of Bantu (Black Africans) subjects aged from 18 to 45 years who were admitted in Service of Conservative Dentistry of Kinshasa University, root canal length were compared with already published data from studies involving Caucasians and Asians. Results: This study includes 720 subjects; 480 (66%) were female and 240 (34%) were male. A total of 818 teeth were examined with 1539 root canals. The upper central incisor and the lower first molar predominated respectively in the maxilla and the mandible regions. There is a significant difference between the canal length of Bantu and Asians in the palatal canal of the upper second molar by 3.1 mm (p= 0.00). Eight different canals of Bantu were longer as compared to a single canal for Asians (p <0.05). This include the Vestibular (V) and palatine (P) canals of Bantu the first premolar (PM1 ), palatal of the second premolar (PM2 ), mesio-vestibular (MV), disto-vestibular (DV) and palatine (P) of the first molar (M1 ) mesio-vestibular and palatal of the second molar (M2 ). The lateral incisors (IL) (p= 0,01) and the canines (p= 0.12) of the Asians were longer than that of the Bantu. The Caucasians presented with longer canines than Bantu with a length difference of 1.7 mm (p= 0.11). Four Caucasians also presented with longer canals of the Mesio-Vestibular (MV) and mesiolingual (ML) of the two molars (M1 and M2 ) as compared to one for Bantu are the longest (p <0.05). Exceptionally, the distal canal (D) of the second molar (M2 ) of the Bantu was longer than that of the Caucasians, with a length difference of 1.5 mm. Conclusion: The root canal length of Bantu is between than those of the most Asian and shortest Caucasian.
{"title":"Difference in Root Canal Length between Populations","authors":"","doi":"10.33140/jodh.03.02.3","DOIUrl":"https://doi.org/10.33140/jodh.03.02.3","url":null,"abstract":"Introduction: The objective of the study was to make the comparison of the root canal length of different types of teeth in black-Africans (Bantu)\u0000to that of Caucasians and Asians.\u0000Materials and Methods: Data from a prospective cross-sectional study of Bantu (Black Africans) subjects aged from 18 to 45 years who were\u0000admitted in Service of Conservative Dentistry of Kinshasa University, root canal length were compared with already published data from studies\u0000involving Caucasians and Asians.\u0000Results: This study includes 720 subjects; 480 (66%) were female and 240 (34%) were male. A total of 818 teeth were examined with 1539\u0000root canals. The upper central incisor and the lower first molar predominated respectively in the maxilla and the mandible regions. There is a\u0000significant difference between the canal length of Bantu and Asians in the palatal canal of the upper second molar by 3.1 mm (p= 0.00). Eight\u0000different canals of Bantu were longer as compared to a single canal for Asians (p <0.05).\u0000This include the Vestibular (V) and palatine (P) canals of Bantu the first premolar (PM1\u0000), palatal of the second premolar (PM2\u0000), mesio-vestibular\u0000(MV), disto-vestibular (DV) and palatine (P) of the first molar (M1\u0000) mesio-vestibular and palatal of the second molar (M2\u0000). The lateral incisors\u0000(IL) (p= 0,01) and the canines (p= 0.12) of the Asians were longer than that of the Bantu. The Caucasians presented with longer canines than\u0000Bantu with a length difference of 1.7 mm (p= 0.11).\u0000Four Caucasians also presented with longer canals of the Mesio-Vestibular (MV) and mesiolingual (ML) of the two molars (M1\u0000 and M2\u0000) as\u0000compared to one for Bantu are the longest (p <0.05).\u0000Exceptionally, the distal canal (D) of the second molar (M2\u0000) of the Bantu was longer than that of the Caucasians, with a length difference of 1.5 mm.\u0000Conclusion: The root canal length of Bantu is between than those of the most Asian and shortest Caucasian.","PeriodicalId":15598,"journal":{"name":"Journal of dental health, oral disorders & therapy","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77562894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-10DOI: 10.15406/jdhodt.2019.10.00488
Asma Al Meslet, Heba Al Hamedi, Hanan Al Zhrani, Khayria Al Somaly, Anfal Al Doukhi
Anemia is a condition defined as lack of red blood cell or hemoglobin which is carries oxygen from the lungs to the tissues.1 Sickle cell anemia is an inherited blood disorder (IBD) caused by a mutation of the hemoglobin gene that affects hemoglobin structure and morphologic in erythrocytes; resulting in the formation of abnormal, sickle-shaped red blood cells.2 In SCA there is reducing the flow of the blood and oxygen into the body organs and impedes blood flow through small capillaries will cause blockage of blood vessels (i.e., vaso-occlusion).3 Epidemiology of Sickle Cell Disease in the United States, about 72 000 people and 2 million are carriers.4 In Africa, more than 200 000 infants are born yearly with SCD.5 The Eastern Province of Saudi Arabia is known to have one of the highest prevalence rates of SCD worldwide.6,7
{"title":"Knowledge and awareness of sickle cell anemia among dental students in Riyadh Elm University","authors":"Asma Al Meslet, Heba Al Hamedi, Hanan Al Zhrani, Khayria Al Somaly, Anfal Al Doukhi","doi":"10.15406/jdhodt.2019.10.00488","DOIUrl":"https://doi.org/10.15406/jdhodt.2019.10.00488","url":null,"abstract":"Anemia is a condition defined as lack of red blood cell or hemoglobin which is carries oxygen from the lungs to the tissues.1 Sickle cell anemia is an inherited blood disorder (IBD) caused by a mutation of the hemoglobin gene that affects hemoglobin structure and morphologic in erythrocytes; resulting in the formation of abnormal, sickle-shaped red blood cells.2 In SCA there is reducing the flow of the blood and oxygen into the body organs and impedes blood flow through small capillaries will cause blockage of blood vessels (i.e., vaso-occlusion).3 Epidemiology of Sickle Cell Disease in the United States, about 72 000 people and 2 million are carriers.4 In Africa, more than 200 000 infants are born yearly with SCD.5 The Eastern Province of Saudi Arabia is known to have one of the highest prevalence rates of SCD worldwide.6,7","PeriodicalId":15598,"journal":{"name":"Journal of dental health, oral disorders & therapy","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87121450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-05-30DOI: 10.15406/jdhodt.2019.10.00487
V. Mehta, Shahnaz Mansoori
Fusion is defined as a single enlarged tooth or joined tooth in which the tooth count reveals a missing tooth when the anomalous tooth is counted as one.1 It is a dental twinning anomaly and has been described by many terms like double teeth, connated tooth, conjoined teeth or twinned teeth. Clinically, it may appear as normal sized or large, depending upon the stage at which embryological union occurs during development. It is commonly confused with gemination which is an incomplete attempt of one tooth bud to divide into two. The frequency of double teeth in deciduous teeth is greater, with a reported prevalence from 0.5 to 2.5% and the occurrence is higher amongst Asian populations.1 Incisors and canines are the most commonly affected teeth in both dentitions.1 Supernumerary tooth arises due to an anomaly in number of teeth due to an excessive dental lamina activity.2 Supernumerary teeth occur rarely in the primary dentition as compared to permanent dentition.3 The prevalence of supernumerary teeth in primary dentition is 0.2-1.9%.4 Males are more commonly affected as compared to females.5 A frequent finding in fusion of primary teeth is the congenital absence of corresponding permanent teeth. The prevalence of tooth fusion in the primary dentition is 0.52.5%.6
{"title":"Fused primary supernumerary tooth associated with maxillary primary lateral incisor: a case report","authors":"V. Mehta, Shahnaz Mansoori","doi":"10.15406/jdhodt.2019.10.00487","DOIUrl":"https://doi.org/10.15406/jdhodt.2019.10.00487","url":null,"abstract":"Fusion is defined as a single enlarged tooth or joined tooth in which the tooth count reveals a missing tooth when the anomalous tooth is counted as one.1 It is a dental twinning anomaly and has been described by many terms like double teeth, connated tooth, conjoined teeth or twinned teeth. Clinically, it may appear as normal sized or large, depending upon the stage at which embryological union occurs during development. It is commonly confused with gemination which is an incomplete attempt of one tooth bud to divide into two. The frequency of double teeth in deciduous teeth is greater, with a reported prevalence from 0.5 to 2.5% and the occurrence is higher amongst Asian populations.1 Incisors and canines are the most commonly affected teeth in both dentitions.1 Supernumerary tooth arises due to an anomaly in number of teeth due to an excessive dental lamina activity.2 Supernumerary teeth occur rarely in the primary dentition as compared to permanent dentition.3 The prevalence of supernumerary teeth in primary dentition is 0.2-1.9%.4 Males are more commonly affected as compared to females.5 A frequent finding in fusion of primary teeth is the congenital absence of corresponding permanent teeth. The prevalence of tooth fusion in the primary dentition is 0.52.5%.6","PeriodicalId":15598,"journal":{"name":"Journal of dental health, oral disorders & therapy","volume":"55 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78814499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Radiographic Mandibular Indices serve as easy and relatively cheap tools for evaluating bone mineralization. Objectives: To examine the effect of age and gender on three mandibular indices: the panoramic mandibular index (PMI), the mandibular ratio (MR) and the mandibular cortical index (MCI), among Libyan population. Methods: The three indices were measured on 317 digital (OPGs) of adult humans (155 males, 162 females). The sample was divided into six age groups (from 18-25 years through 56-65 years). The measurements were analyzed for interactions with age and sex, using SPSS (Statistical Package for Social Studies) software version no. 22. The tests employed were two way ANOVA, the unpaired T-test and chi-square test. Results: The mean PMI fluctuated between 0.37 s.d. 0.012 and 0.38 s.d. 0.012. among the sixth age groups. One-way ANOVA statistical test revealed no significant of age on PMI. On the other hand gender variation has effect on PMI, since independent sample t-test disclosed that the difference between the male and female PMI means statistically significant. ANOVA test showed that the means of MR among age groups showed a negative correlation i.e. MR mean declined from 3.01 in 18-25 age groups to 2.7 in 55-65 age groups. In contrary, the gender showed no effect on MR according two sample t-test at p> 0.05. In regards with MCI, statistical analysis showed that it affected by age that is C1 was decreasing by age while C2 and C3 were increased by age. Using chi square test the result indicated that there is a significant difference among the different age group and the two genders in MCI readings. Conclusion: PMI was influenced significantly by age but minimally by the gender. MR is not affected by gender but has a negative correlation with age. MCI is affected by both age and gender
放射学下颌骨指数是评估骨矿化的简单和相对便宜的工具。目的:探讨年龄和性别对利比亚人群下颌全景指数(PMI)、下颌比例(MR)和下颌皮质指数(MCI)的影响。方法:对317例成人(男性155例，女性162例)的数字(opg)进行3项指标测定。样本被分为6个年龄组(从18-25岁到56-65岁)。使用SPSS (Statistical Package for Social Studies)软件对测量结果与年龄和性别的相互作用进行分析。22. 采用双因素方差分析、非配对t检验和卡方检验。结果:PMI均值在0.37 s.d 0.012 ~ 0.38 s.d 0.012之间波动。在第六个年龄组中。单因素方差分析显示年龄对PMI的影响不显著。另一方面，性别差异对PMI有影响，因为独立样本t检验表明，男性和女性PMI之间的差异具有统计学意义。方差分析显示各年龄组间MR均值呈负相关，MR均值由18-25岁年龄组的3.01下降到55-65岁年龄组的2.7。两样本t检验p> 0.05，性别对mri无影响。在MCI方面，统计分析显示受年龄的影响，C1随年龄的增长而降低，C2和C3随年龄的增长而升高。卡方检验的结果表明，不同年龄组和性别之间的MCI读数存在显著差异。结论:PMI受年龄影响显著，性别影响较小。MR不受性别影响，但与年龄呈负相关。轻度认知障碍受年龄和性别的影响
{"title":"The Influence of Age and Gender on Mandibular Indices among the Libyan Population","authors":"","doi":"10.33140/jodh.03.02.2","DOIUrl":"https://doi.org/10.33140/jodh.03.02.2","url":null,"abstract":"Radiographic Mandibular Indices serve as easy and relatively cheap tools for evaluating bone mineralization.\u0000Objectives: To examine the effect of age and gender on three mandibular indices: the panoramic mandibular index\u0000(PMI), the mandibular ratio (MR) and the mandibular cortical index (MCI), among Libyan population.\u0000Methods: The three indices were measured on 317 digital (OPGs) of adult humans (155 males, 162 females). The\u0000sample was divided into six age groups (from 18-25 years through 56-65 years). The measurements were analyzed\u0000for interactions with age and sex, using SPSS (Statistical Package for Social Studies) software version no. 22. The\u0000tests employed were two way ANOVA, the unpaired T-test and chi-square test.\u0000Results: The mean PMI fluctuated between 0.37 s.d. 0.012 and 0.38 s.d. 0.012. among the sixth age groups. One-way\u0000ANOVA statistical test revealed no significant of age on PMI. On the other hand gender variation has effect on PMI,\u0000since independent sample t-test disclosed that the difference between the male and female PMI means statistically\u0000significant. ANOVA test showed that the means of MR among age groups showed a negative correlation i.e. MR mean\u0000declined from 3.01 in 18-25 age groups to 2.7 in 55-65 age groups. In contrary, the gender showed no effect on MR\u0000according two sample t-test at p> 0.05. In regards with MCI, statistical analysis showed that it affected by age that\u0000is C1 was decreasing by age while C2 and C3 were increased by age. Using chi square test the result indicated that\u0000there is a significant difference among the different age group and the two genders in MCI readings.\u0000Conclusion: PMI was influenced significantly by age but minimally by the gender. MR is not affected by gender but\u0000has a negative correlation with age. MCI is affected by both age and gender","PeriodicalId":15598,"journal":{"name":"Journal of dental health, oral disorders & therapy","volume":"57 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84427601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-05-28DOI: 10.15406/jdhodt.2019.10.00486
Haneen Alshukairi
Human eruption is a unique developmental process in the organism. Delayed tooth eruption is the emergence of a tooth into the oral cavity at a time that deviates significantly from norms established for different races, ethnicities, and sexes. The eruption time of primary teeth is very important for planning and diagnosing of certain growth developments. The present article gave a review on delayed tooth eruption and its pathogenesis.
{"title":"Delayed tooth eruption and its pathogenesis in paediatric patient: a review","authors":"Haneen Alshukairi","doi":"10.15406/jdhodt.2019.10.00486","DOIUrl":"https://doi.org/10.15406/jdhodt.2019.10.00486","url":null,"abstract":"Human eruption is a unique developmental process in the organism. Delayed tooth eruption is the emergence of a tooth into the oral cavity at a time that deviates significantly from norms established for different races, ethnicities, and sexes. The eruption time of primary teeth is very important for planning and diagnosing of certain growth developments. The present article gave a review on delayed tooth eruption and its pathogenesis.","PeriodicalId":15598,"journal":{"name":"Journal of dental health, oral disorders & therapy","volume":"13 2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75965233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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