Background: Maxillary canine is the second most common tooth that gets impacted after III molars. Early pre-eruptive inclination changes of first premolar and its associative changes with canine inclination are an important factor that predicts the fate of maxillary canines. Hence, a cross-sectional study was planned to evaluate the normal pre-eruptive mesiodistal inclinations of maxillary permanent canine, first premolar, and lateral incisor in children aged 6-14 years using orthopantomogram.
Materials and methods: The total number of participants was 296. Each group of boys and girls consisted of 37 participants in each of the age groups 6-8 years, 8-10 years, 10-12 years, and 13-14 years, making up a total of 148 boys and 148 girls. Routine clinical examination was conducted, and orthopantomograph was taken for radiographic examination. Orthopantomographs of all these participants were collected. Inclination of lateral incisor, inclination of canine, and inclination of premolar with midline were measured on the orthopantomogram. Also, the angles between the canine with lateral incisor and canine with first premolar were measured. Pearson correlation was also evaluated between the movement of canine with lateral incisor and canine with first premolar.
Results: All the mean angles related to lateral incisor, canine, and first premolar with midline were recorded. Also, the angles between the canine with lateral incisor and the canine with first premolar were recorded. The movements between lateral incisor, canine, and first premolar were moderately correlated from 6 to 12 years of age.
Conclusion: The eruption of canine from the floor of the nose till it erupts has its synchronized influence on the lateral incisor and the first premolar.
{"title":"Normal pre-eruptive inclinations of maxillary canine, lateral incisor, and first premolar in children aged 6-14 years.","authors":"Santosh K Goje, Bhavna Dave","doi":"10.4103/jos.jos_40_22","DOIUrl":"https://doi.org/10.4103/jos.jos_40_22","url":null,"abstract":"<p><strong>Background: </strong>Maxillary canine is the second most common tooth that gets impacted after III molars. Early pre-eruptive inclination changes of first premolar and its associative changes with canine inclination are an important factor that predicts the fate of maxillary canines. Hence, a cross-sectional study was planned to evaluate the normal pre-eruptive mesiodistal inclinations of maxillary permanent canine, first premolar, and lateral incisor in children aged 6-14 years using orthopantomogram.</p><p><strong>Materials and methods: </strong>The total number of participants was 296. Each group of boys and girls consisted of 37 participants in each of the age groups 6-8 years, 8-10 years, 10-12 years, and 13-14 years, making up a total of 148 boys and 148 girls. Routine clinical examination was conducted, and orthopantomograph was taken for radiographic examination. Orthopantomographs of all these participants were collected. Inclination of lateral incisor, inclination of canine, and inclination of premolar with midline were measured on the orthopantomogram. Also, the angles between the canine with lateral incisor and canine with first premolar were measured. Pearson correlation was also evaluated between the movement of canine with lateral incisor and canine with first premolar.</p><p><strong>Results: </strong>All the mean angles related to lateral incisor, canine, and first premolar with midline were recorded. Also, the angles between the canine with lateral incisor and the canine with first premolar were recorded. The movements between lateral incisor, canine, and first premolar were moderately correlated from 6 to 12 years of age.</p><p><strong>Conclusion: </strong>The eruption of canine from the floor of the nose till it erupts has its synchronized influence on the lateral incisor and the first premolar.</p>","PeriodicalId":16604,"journal":{"name":"Journal of Orthodontic Science","volume":"12 ","pages":"5"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/57/35/JOS-12-5.PMC10282516.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10070961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
OBJECTIVES: To evaluate the lingual dental arch form types in class I canine and molar relationship based on scanning dental cast models using three-dimensional laser scan and to give a new lingual arch form pattern created on this classification to be used for clinical submission by studying three-dimensional virtual models of the normal occlusion samples. MATERIALS AND METHODS: Maxillary and mandibular casts of 120 young adults (18-24 ± 1.84 years) have normal occlusion that was scanned using a 3Shape E1 laser scanner, and then, the data were analyzed using SPSS software; then, we used K-means cluster to classify the arch form into clusters depending on the measurement of 10 landmarks designated on the lingual surface of the teeth. RESULTS: Many dental arch patterns have been established for both the mandible and the maxilla. CONCLUSION: The minimum sizes were found in the females, and the biggest sizes were found in the male subjects, and three sets were well defined for each sex; three categories for each mandible and maxilla are as follows: narrow, mid, and broad. The lingual arch form can be classified into three groups based on posterior and anterior dimensions, so a template of the three arch forms has been exemplified.
{"title":"Three-dimensional of lingual arch form and creation of templates in Iraqi normal occlusion","authors":"AliJamal Abdul Razzaq, Zaid Dewachi","doi":"10.4103/jos.jos_119_22","DOIUrl":"https://doi.org/10.4103/jos.jos_119_22","url":null,"abstract":"OBJECTIVES: To evaluate the lingual dental arch form types in class I canine and molar relationship based on scanning dental cast models using three-dimensional laser scan and to give a new lingual arch form pattern created on this classification to be used for clinical submission by studying three-dimensional virtual models of the normal occlusion samples. MATERIALS AND METHODS: Maxillary and mandibular casts of 120 young adults (18-24 ± 1.84 years) have normal occlusion that was scanned using a 3Shape E1 laser scanner, and then, the data were analyzed using SPSS software; then, we used K-means cluster to classify the arch form into clusters depending on the measurement of 10 landmarks designated on the lingual surface of the teeth. RESULTS: Many dental arch patterns have been established for both the mandible and the maxilla. CONCLUSION: The minimum sizes were found in the females, and the biggest sizes were found in the male subjects, and three sets were well defined for each sex; three categories for each mandible and maxilla are as follows: narrow, mid, and broad. The lingual arch form can be classified into three groups based on posterior and anterior dimensions, so a template of the three arch forms has been exemplified.","PeriodicalId":16604,"journal":{"name":"Journal of Orthodontic Science","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135447329","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}
HusseinS Yakop, SarmadS. Salih Al Qassar, MahmoodAhmad Hamood Aljoubory
BACKGROUND: Static friction force between the orthodontic brackets and wire impacts the sliding mechanics that affect teeth movements and treatment duration. This sliding media is jam-packed with released metal ions from the fixed appliances. This study aimed to assess the static frictional force and surface topography of stainless steel (SS) and I archwires in dry conditions and in media fully with metal ions that were released from fixed appliances. METHODS: In this research study, a set of 60 as-received straight archwires specimens (5 cm wire) were employed and categorized into two groups based on the material type [30 super elastics new I archwires gauge (0.018 × 0.014 inch) and 30 SS archwires 0.018 × 0.022” as a control]. The archwires' static friction force was measured while sliding a loaded Roth SS brackets (0.018”) on the archwire using a universal tensile testing machine in dry and metal ions released media, while the surface topography was assessed using a noncontact AFM machine. RESULTS: The static friction of I archwire was significantly lower than the SS wire in dry condition. Metal ions media released from fixed appliances significantly reduced the Static friction compared to dry and wet conditions with deionized water for both wires. An Atomic Force Microscope machine surface roughness reports revealed that the highest mean of all three roughness parameters was found in the SS group, followed by I archwires in descending order. Additionally, metal ions media significantly reduce all roughness parameters.
{"title":"Assessment of the influence of metal ions released from the fixed orthodontic appliances on the static friction and surface topography of stainless steel and I archwires: An in-vitro study","authors":"HusseinS Yakop, SarmadS. Salih Al Qassar, MahmoodAhmad Hamood Aljoubory","doi":"10.4103/jos.jos_58_23","DOIUrl":"https://doi.org/10.4103/jos.jos_58_23","url":null,"abstract":"BACKGROUND: Static friction force between the orthodontic brackets and wire impacts the sliding mechanics that affect teeth movements and treatment duration. This sliding media is jam-packed with released metal ions from the fixed appliances. This study aimed to assess the static frictional force and surface topography of stainless steel (SS) and I archwires in dry conditions and in media fully with metal ions that were released from fixed appliances. METHODS: In this research study, a set of 60 as-received straight archwires specimens (5 cm wire) were employed and categorized into two groups based on the material type [30 super elastics new I archwires gauge (0.018 × 0.014 inch) and 30 SS archwires 0.018 × 0.022” as a control]. The archwires' static friction force was measured while sliding a loaded Roth SS brackets (0.018”) on the archwire using a universal tensile testing machine in dry and metal ions released media, while the surface topography was assessed using a noncontact AFM machine. RESULTS: The static friction of I archwire was significantly lower than the SS wire in dry condition. Metal ions media released from fixed appliances significantly reduced the Static friction compared to dry and wet conditions with deionized water for both wires. An Atomic Force Microscope machine surface roughness reports revealed that the highest mean of all three roughness parameters was found in the SS group, followed by I archwires in descending order. Additionally, metal ions media significantly reduce all roughness parameters.","PeriodicalId":16604,"journal":{"name":"Journal of Orthodontic Science","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135448875","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}
Lam Nguyen Le, Thao T Do, Phuong Khanh V Le, Duong V Huynh, Trang K T Nguyen
Background and purpose: The soft-tissue layer and facial skeleton influence the harmony and equilibrium of the face. The evaluation of the patient's structural and soft-tissue features is one of the most crucial steps in preparing for the diagnosis and treatment of oral-maxillofacial orthodontics. Clinicians can intervene with the proper treatment at the proper time to achieve the best results by being aware of the traits and variations of soft tissue at various developmental stages and in various races. To obtain a consistent treatment result in terms of function and aesthetically pleasing results, patients, and forecast, the growth that may take place after the orthopedic therapy has concluded.
Objective: To examine the soft-tissue features of the oral-maxillofacial area in Vietnamese adults (aged 18-25 years) by evaluating cephalometric radiographs.
Materials and methods: In a cross-sectional descriptive study, 85 students from Can Tho University of Medicine and Pharmacy took part. Students' lateral cephalograms were taken in compliance with the sample requirements.
Results: Men's lip protrusion (4.30 ± 0.71) was higher than women's (3.88 ± 0.97) (P = 0.024 <.05) and men's (-4.88 ± 0.93) chin lip groove depth was higher than women's (-4.24 ± 0.93) (P = 0.002), both with a P value of. 05.
Conclusions: The study identified a statistically significant difference in the protrusion of the top lip and the depth of the cleft lip between the male and female, demonstrating that the soft-tissue features of Vietnamese students were distinct from those of other races.
背景与目的:软组织层和面部骨架影响面部的和谐与平衡。评估患者的结构和软组织特征是准备口腔颌面正畸诊断和治疗的最关键步骤之一。临床医生可以通过了解软组织在不同发育阶段和不同种族的特征和变化，在适当的时间进行适当的治疗，以达到最佳效果。为了在功能和美观方面获得一致的治疗结果，患者和预测矫形治疗结束后可能发生的生长。目的:通过评价越南成人(18-25岁)的头颅x线片，探讨口腔颌面部软组织特征。材料与方法:采用横断面描述性研究方法，选取芹苴医药大学85名学生为研究对象。按照样本要求拍摄学生侧位脑电图。结果:男性唇突(4.30±0.71)高于女性(3.88±0.97)(P = 0.024 P = 0.002)， P值均为。05.结论:研究发现，在上唇突出度和唇裂深度上，男性和女性有统计学上的显著差异，这表明越南学生的软组织特征与其他种族的学生不同。
{"title":"Norms of soft tissue cephalometric in the 18-25 age demography in Vietnam.","authors":"Lam Nguyen Le, Thao T Do, Phuong Khanh V Le, Duong V Huynh, Trang K T Nguyen","doi":"10.4103/jos.jos_105_22","DOIUrl":"https://doi.org/10.4103/jos.jos_105_22","url":null,"abstract":"<p><strong>Background and purpose: </strong>The soft-tissue layer and facial skeleton influence the harmony and equilibrium of the face. The evaluation of the patient's structural and soft-tissue features is one of the most crucial steps in preparing for the diagnosis and treatment of oral-maxillofacial orthodontics. Clinicians can intervene with the proper treatment at the proper time to achieve the best results by being aware of the traits and variations of soft tissue at various developmental stages and in various races. To obtain a consistent treatment result in terms of function and aesthetically pleasing results, patients, and forecast, the growth that may take place after the orthopedic therapy has concluded.</p><p><strong>Objective: </strong>To examine the soft-tissue features of the oral-maxillofacial area in Vietnamese adults (aged 18-25 years) by evaluating cephalometric radiographs.</p><p><strong>Materials and methods: </strong>In a cross-sectional descriptive study, 85 students from Can Tho University of Medicine and Pharmacy took part. Students' lateral cephalograms were taken in compliance with the sample requirements.</p><p><strong>Results: </strong>Men's lip protrusion (4.30 ± 0.71) was higher than women's (3.88 ± 0.97) (<i>P</i> = 0.024 <.05) and men's (-4.88 ± 0.93) chin lip groove depth was higher than women's (-4.24 ± 0.93) (<i>P</i> = 0.002), both with a <i>P</i> value of. 05.</p><p><strong>Conclusions: </strong>The study identified a statistically significant difference in the protrusion of the top lip and the depth of the cleft lip between the male and female, demonstrating that the soft-tissue features of Vietnamese students were distinct from those of other races.</p>","PeriodicalId":16604,"journal":{"name":"Journal of Orthodontic Science","volume":"12 ","pages":"35"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/c6/d2/JOS-12-35.PMC10282534.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9712347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
BACKGROUND: Microesthetics in orthodontics, which focuses on subtly and precisely enhancing a patient's smile's esthetics, has seen a rise in popularity in recent years. The objective of this systematic study was to assess our present understanding of orthodontic microesthetics. METHODS: A thorough search was done using the terms “microesthetics in orthodontics,” “aesthetic orthodontics,” “orthodontic aesthetics,” and “orthodontic smile design” across different databases. Articles published between 2011 and 2022 were considered for selection in this review. RESULTS: Five studies were selected for the review. The meta-analysis found a statistically significant and clinically relevant improvement in microesthetic parameters due to orthodontic treatment. The odds ratio estimate was 0.32 (95% confidence interval (95% CI): 0.28 to 0.37), suggesting a noticeable effect of orthodontic treatment on microesthetic parameters. The forest plot also showed an overall risk ratio of 0.57 (95% CI: 0.53 to 0.61) and a risk difference of -0.28 (95% CI: -0.31 to -0.24) for noticeable versus negligible effects of orthodontic treatment on microesthetic parameter in patients. The heterogeneity was significant among the studies, with a Chi-square value of 15.34 (P = 0.004) and 14.79 (P = 0.005) for the odds ratio and risk difference, respectively, indicating a moderate level of heterogeneity. CONCLUSION: The results of this study's review and meta-analysis point to a statistically significant and clinically meaningful difference in the microesthetic parameters between individuals who received orthodontic treatment and those who did not. The heterogeneity statistics, however, indicates significant variation between research studies. REGISTRATION: This review protocol was registered on the International Prospective Register of Systematic Reviews (PROSPERO; registration number: CRD42022397219).
{"title":"Microesthetics in orthodontics: A systematic review and meta-analysis","authors":"MohammadKhursheed Alam, NawadirHamoud Alanazi, TethkarMukhlef Alanzi, ShahadMohammad Alrwuili, MonaSaleh Alazmi, AwsafMurdhi Alruwaili, AynaaFawaz AlRashed, YahyaAbdullah Alogaibi","doi":"10.4103/jos.jos_84_23","DOIUrl":"https://doi.org/10.4103/jos.jos_84_23","url":null,"abstract":"BACKGROUND: Microesthetics in orthodontics, which focuses on subtly and precisely enhancing a patient's smile's esthetics, has seen a rise in popularity in recent years. The objective of this systematic study was to assess our present understanding of orthodontic microesthetics. METHODS: A thorough search was done using the terms “microesthetics in orthodontics,” “aesthetic orthodontics,” “orthodontic aesthetics,” and “orthodontic smile design” across different databases. Articles published between 2011 and 2022 were considered for selection in this review. RESULTS: Five studies were selected for the review. The meta-analysis found a statistically significant and clinically relevant improvement in microesthetic parameters due to orthodontic treatment. The odds ratio estimate was 0.32 (95% confidence interval (95% CI): 0.28 to 0.37), suggesting a noticeable effect of orthodontic treatment on microesthetic parameters. The forest plot also showed an overall risk ratio of 0.57 (95% CI: 0.53 to 0.61) and a risk difference of -0.28 (95% CI: -0.31 to -0.24) for noticeable versus negligible effects of orthodontic treatment on microesthetic parameter in patients. The heterogeneity was significant among the studies, with a Chi-square value of 15.34 (P = 0.004) and 14.79 (P = 0.005) for the odds ratio and risk difference, respectively, indicating a moderate level of heterogeneity. CONCLUSION: The results of this study's review and meta-analysis point to a statistically significant and clinically meaningful difference in the microesthetic parameters between individuals who received orthodontic treatment and those who did not. The heterogeneity statistics, however, indicates significant variation between research studies. REGISTRATION: This review protocol was registered on the International Prospective Register of Systematic Reviews (PROSPERO; registration number: CRD42022397219).","PeriodicalId":16604,"journal":{"name":"Journal of Orthodontic Science","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135448161","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}
AbhishekS Nayyar, RKranthi Kumar, SavadamoorthiKamatchi Subramani, B Swathika, S Ganesan, Meenakumari Chikkanna, Sabari Murugesan, JSuresh Babu, C Swarnalatha
OBJECTIVE: The contemporary esthetic restorative materials such as composite resin and glass-ionomer cements and their modifications have all been developed keeping in mind the requirements of permanent teeth. There have been plenty of studies that have focused on the characteristics of these materials in relation to permanent teeth with a relative dearth of such studies as regard to the primary teeth. The present study was undertaken to compare and evaluate the shear bond strength of composite resin, compomer, and resin-modified glass-ionomer cements in primary teeth. METHODS: Thirty non-carious primary molars that were indicated for extraction because of physiological resorption or, for orthodontic reasons, were selected. The selected teeth were randomly allocated to three groups of 10 each for composite, compomer, and resin-modified glass-ionomer cements. The enamel from the occlusal surface of all teeth was removed to expose the superficial dentin and was wet polished with 400 grit sand paper. Composite, compomer, and resin-modified glass-ionomer stubs were bonded on to the occlusal surfaces using a plastic tube as a template. All samples were, then, subjected to thermocycling and evaluation of shear bond strength using the universal testing machine at a cross-head speed of 0.5 mm/min, whereas the results obtained were subjected to statistical analysis. Statistical analysis was performed using Statistical Package for Social Sciences (SPSS) version 17.0 (SPSS Inc., Chicago, IL, USA), whereas one-way analysis of variance (ANOVA) and Tukey's multiple post-hoc procedures were used for statistical analysis. A P < 0.05 was considered statistically significant. RESULTS: The mean shear bond strength values for Groups I, II, and III were found to be 11.7 ± 3.07 MPa, 7.74 ± 4.16 Mpa, and 4.43 ± 2.08 Mpa, respectively, whereas one-way ANOVA and Tukey's multiple post-hoc procedures indicated that there were remarkable differences among the three groups with the results being statistically significant (P < 0.05). CONCLUSIONS: Composite resin showed the highest shear bond strength in relation to primary dentin when compared to compomer and resin-modified glass-ionomer cements.
{"title":"Comparison of shear bond strength of composite resin, compomer, and resin-modified glass-ionomer cements in primary teeth: An in-vitro study","authors":"AbhishekS Nayyar, RKranthi Kumar, SavadamoorthiKamatchi Subramani, B Swathika, S Ganesan, Meenakumari Chikkanna, Sabari Murugesan, JSuresh Babu, C Swarnalatha","doi":"10.4103/jos.jos_36_23","DOIUrl":"https://doi.org/10.4103/jos.jos_36_23","url":null,"abstract":"OBJECTIVE: The contemporary esthetic restorative materials such as composite resin and glass-ionomer cements and their modifications have all been developed keeping in mind the requirements of permanent teeth. There have been plenty of studies that have focused on the characteristics of these materials in relation to permanent teeth with a relative dearth of such studies as regard to the primary teeth. The present study was undertaken to compare and evaluate the shear bond strength of composite resin, compomer, and resin-modified glass-ionomer cements in primary teeth. METHODS: Thirty non-carious primary molars that were indicated for extraction because of physiological resorption or, for orthodontic reasons, were selected. The selected teeth were randomly allocated to three groups of 10 each for composite, compomer, and resin-modified glass-ionomer cements. The enamel from the occlusal surface of all teeth was removed to expose the superficial dentin and was wet polished with 400 grit sand paper. Composite, compomer, and resin-modified glass-ionomer stubs were bonded on to the occlusal surfaces using a plastic tube as a template. All samples were, then, subjected to thermocycling and evaluation of shear bond strength using the universal testing machine at a cross-head speed of 0.5 mm/min, whereas the results obtained were subjected to statistical analysis. Statistical analysis was performed using Statistical Package for Social Sciences (SPSS) version 17.0 (SPSS Inc., Chicago, IL, USA), whereas one-way analysis of variance (ANOVA) and Tukey's multiple post-hoc procedures were used for statistical analysis. A P < 0.05 was considered statistically significant. RESULTS: The mean shear bond strength values for Groups I, II, and III were found to be 11.7 ± 3.07 MPa, 7.74 ± 4.16 Mpa, and 4.43 ± 2.08 Mpa, respectively, whereas one-way ANOVA and Tukey's multiple post-hoc procedures indicated that there were remarkable differences among the three groups with the results being statistically significant (P < 0.05). CONCLUSIONS: Composite resin showed the highest shear bond strength in relation to primary dentin when compared to compomer and resin-modified glass-ionomer cements.","PeriodicalId":16604,"journal":{"name":"Journal of Orthodontic Science","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135448465","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}
Extractions are commonly used to alleviate moderate to severe crowding, retract protrusive incisors, or correct anteroposterior inconsistencies in the maxillomandibular area. The choice of which teeth to be extracted requires a thorough assessment of the dentition of the patient, taking into account treatment objectives, dental and periodontal properties as well as ease of mechanics with minimum iatrogenic effects. This case report discusses the successful treatment with myofunctional appliance of a growing patient with skeletal Class II malocclusion followed by fixed mechanotherapy involving atypical teeth extraction.
{"title":"Orthodontic management of a growing skeletal class II case with functional appliance and atypical extractions: A case report","authors":"Monis Raza, Payal Sharma, Shubhangi Jain, Piush Kumar","doi":"10.4103/jos.jos_151_21","DOIUrl":"https://doi.org/10.4103/jos.jos_151_21","url":null,"abstract":"Extractions are commonly used to alleviate moderate to severe crowding, retract protrusive incisors, or correct anteroposterior inconsistencies in the maxillomandibular area. The choice of which teeth to be extracted requires a thorough assessment of the dentition of the patient, taking into account treatment objectives, dental and periodontal properties as well as ease of mechanics with minimum iatrogenic effects. This case report discusses the successful treatment with myofunctional appliance of a growing patient with skeletal Class II malocclusion followed by fixed mechanotherapy involving atypical teeth extraction.","PeriodicalId":16604,"journal":{"name":"Journal of Orthodontic Science","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135448871","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 evaluate and compare the shear bond strength of stainless-steel brackets using three different light curing units.
Material and methods: Using three LED curing units (3M ESPE Elipar, Ivoclar bluephase, and Woodpecker I LED light cure), 120 precoated metal brackets (Gemini series, 3M Unitek) were cured. The shear bond strength was recorded using a universal testing machine.
Result: The shear strength of the bracket in different light-curing systems was examined with ANOVA test. The mean shear strength of group A, group B, and group C were 16.03 ± 14.30 MPA, 16.86 ± 11.89 MPA, and 20.51 ± 19.40, respectively. The result of the analysis shows that there is a major difference in shear bond strength of these three different light-curing systems with F value = 3.94 and P value 0.04.
Conclusion: We used three LED light-curing units with different intensities and manufacturing companies. The result showed that woodpecker I LED light had significantly highest mean SBS than the other two (Elipar LED curing light and 3M ESPE, Ivoclar bluephase).
{"title":"Comparison of shear bond strength of bonded stainless steel brackets using three different light curing systems: An <i>in vitro</i> study.","authors":"Shashank Soni, Richa Shree, Vijeta Patri, Gaurav Jasoria, Sapana Singh, Ashish Kushwah","doi":"10.4103/jos.jos_83_22","DOIUrl":"https://doi.org/10.4103/jos.jos_83_22","url":null,"abstract":"<p><strong>Objectives: </strong>To evaluate and compare the shear bond strength of stainless-steel brackets using three different light curing units.</p><p><strong>Material and methods: </strong>Using three LED curing units (3M ESPE Elipar, Ivoclar bluephase, and Woodpecker I LED light cure), 120 precoated metal brackets (Gemini series, 3M Unitek) were cured. The shear bond strength was recorded using a universal testing machine.</p><p><strong>Result: </strong>The shear strength of the bracket in different light-curing systems was examined with ANOVA test. The mean shear strength of group A, group B, and group C were 16.03 ± 14.30 MPA, 16.86 ± 11.89 MPA, and 20.51 ± 19.40, respectively. The result of the analysis shows that there is a major difference in shear bond strength of these three different light-curing systems with F value = 3.94 and <i>P</i> value 0.04.</p><p><strong>Conclusion: </strong>We used three LED light-curing units with different intensities and manufacturing companies. The result showed that woodpecker I LED light had significantly highest mean SBS than the other two (Elipar LED curing light and 3M ESPE, Ivoclar bluephase).</p>","PeriodicalId":16604,"journal":{"name":"Journal of Orthodontic Science","volume":"12 ","pages":"20"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/bf/96/JOS-12-20.PMC10282525.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9704155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Osama Mohammed Ghazi, Ali Hamzah Alhashimi, Ghassan Majid Jasim
Aim: This study aimed to assess Iraqi university students' oral health-related quality of life (OHRQoL) according to sociodemographic variables and compare dental and non-dental students.
Methods: A cross-sectional study was carried out for students in multiple Iraqi universities from June 15, 2022, to July 15, 2022. A total of 771 individuals participated in the study using an online questionnaire. A pre-tested and validated Arabic version of the Psychosocial Impact of Dental Aesthetics Questionnaire (PIDAQ) was adopted as an evaluation tool. A P value of less than 0.05 was considered statistically significant. Reliability analysis was conducted using Cronbach's alpha.
Result: Cronbach's alpha score for the overall scales was 0.942, indicating excellent internal consistency. There were 69.8% (n = 538) dental students in the total sample. A significant difference was found between dental and non-dental students in the total PIDAQ scores and other subscale domains (P < 0.05). Statistically significant differences in means were also noted in the residency (P = 0.005) and household income of students (P = 0.000).
Conclusions: This study shows the reliability of the PIDAQ scale for assessing the psychological impact of dental aesthetics on undergraduate Iraqis. It was found that the perception of OHRQoL varies between dental and non-dental university students, and according to socioeconomic status and residency.
{"title":"Assessment of the psychological impact of dental aesthetics among undergraduate university students in Iraq.","authors":"Osama Mohammed Ghazi, Ali Hamzah Alhashimi, Ghassan Majid Jasim","doi":"10.4103/jos.jos_110_22","DOIUrl":"https://doi.org/10.4103/jos.jos_110_22","url":null,"abstract":"<p><strong>Aim: </strong>This study aimed to assess Iraqi university students' oral health-related quality of life (OHRQoL) according to sociodemographic variables and compare dental and non-dental students.</p><p><strong>Methods: </strong>A cross-sectional study was carried out for students in multiple Iraqi universities from June 15, 2022, to July 15, 2022. A total of 771 individuals participated in the study using an online questionnaire. A pre-tested and validated Arabic version of the Psychosocial Impact of Dental Aesthetics Questionnaire (PIDAQ) was adopted as an evaluation tool. A <i>P</i> value of less than 0.05 was considered statistically significant. Reliability analysis was conducted using Cronbach's alpha.</p><p><strong>Result: </strong>Cronbach's alpha score for the overall scales was 0.942, indicating excellent internal consistency. There were 69.8% (n = 538) dental students in the total sample. A significant difference was found between dental and non-dental students in the total PIDAQ scores and other subscale domains (P < 0.05). Statistically significant differences in means were also noted in the residency (P = 0.005) and household income of students (P = 0.000).</p><p><strong>Conclusions: </strong>This study shows the reliability of the PIDAQ scale for assessing the psychological impact of dental aesthetics on undergraduate Iraqis. It was found that the perception of OHRQoL varies between dental and non-dental university students, and according to socioeconomic status and residency.</p>","PeriodicalId":16604,"journal":{"name":"Journal of Orthodontic Science","volume":"12 ","pages":"34"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/8b/7c/JOS-12-34.PMC10282551.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9704157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
B Gangadhar, Anbu Ila, Randhir Kumar, Beautlin Ruban, Kurian Punnoose, Shilpa Dandekeri, Suresh Babu J, C Swarnalatha, Abhishek S Nayyar
Dental implants are one of the established treatment protocols to replace/restore lost tooth/teeth structures. Ihde and Ihde redefined concept of strategic implantology based on immediate loading. The aim of present case series was to evaluate efficacy of strategic implants regarding primary stability, quality of bone, survival, and clinical success in long-term. The present case series included a total of 26 patients aged 40 to 70 years restored with strategic implants after an immediate loading protocol. On follow-up visits, clinical assessment of implant stability was done by absence of implant mobility and absence of pain and dysesthesia while radiographically, immediate postoperative crestal bone level was compared with that observed on follow-up visits. Also, integration of apical and/or crestal threads of implants were assessed radiographically for any signs of radiolucency along with healing of sockets and crestal bone levels in relation to abutment margins.
{"title":"Strategic implants and bone morphogenic changes: Survival and clinical success in long-term.","authors":"B Gangadhar, Anbu Ila, Randhir Kumar, Beautlin Ruban, Kurian Punnoose, Shilpa Dandekeri, Suresh Babu J, C Swarnalatha, Abhishek S Nayyar","doi":"10.4103/jos.jos_43_22","DOIUrl":"https://doi.org/10.4103/jos.jos_43_22","url":null,"abstract":"<p><p>Dental implants are one of the established treatment protocols to replace/restore lost tooth/teeth structures. Ihde and Ihde redefined concept of strategic implantology based on immediate loading. The aim of present case series was to evaluate efficacy of strategic implants regarding primary stability, quality of bone, survival, and clinical success in long-term. The present case series included a total of 26 patients aged 40 to 70 years restored with strategic implants after an immediate loading protocol. On follow-up visits, clinical assessment of implant stability was done by absence of implant mobility and absence of pain and dysesthesia while radiographically, immediate postoperative crestal bone level was compared with that observed on follow-up visits. Also, integration of apical and/or crestal threads of implants were assessed radiographically for any signs of radiolucency along with healing of sockets and crestal bone levels in relation to abutment margins.</p>","PeriodicalId":16604,"journal":{"name":"Journal of Orthodontic Science","volume":"12 ","pages":"24"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/d4/51/JOS-12-24.PMC10282538.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10070963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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