Pub Date : 2023-06-15DOI: 10.18231/j.ijodr.2023.019
A. Shetty, Jaffer Sadik
The aim of this study was to assess the relationship between the cranial base, mandible, and hyoid bone in Class II skeletal individuals. The retrospective study included lateral cephalograms of 40 Skeletal Class II subjects divided into maxillary prognathism (n=20) and mandibular retrognathism(n=20) based on Burstone’s N⊥A and N⊥B values. The angular measurements using 10 variables were used to determine the relationship between the cranial base, mandible, and hyoid bone in Class II subjects. Statistical analyses were performed using IBM SPSS Statistics for Windows, Version 25.0. Armonk, NY: IBM Corp. An Independent t-test was used to compare the two groups and a p-value less than 0.05 was considered statistically significant. Post-Hoc Bonferroni was applied to examine any changes among any two groups that were found to differ statistically. NSAr, C3HyD, SArHy, and NSHy angles were measured in both groups. NSAr and NSHy angles showed significance between the two groups of skeletal class II whose p-value <0.05 whereas C3HyD and SArHy angles did not show any significance. The condylar position was anterior in maxillary prognathism compared to mandibular retrognathism of Skeletal Class II. The hyoid bone was positioned forward and upward in maxillary prognathism individuals and downward and backward in mandibular retrognathism individuals belonging to skeletal class II.
本研究的目的是评估II类骨骼个体的颅底、下颌骨和舌骨之间的关系。这项回顾性研究包括40名骨骼II类受试者的侧位头颅造影，根据Burstone的n⊥A和n⊥B值，将其分为上颌前颌畸形(n=20)和下颌后颌畸形(n=20)。采用10个变量的角度测量来确定II类受试者的颅底、下颌骨和舌骨之间的关系。采用IBM SPSS Statistics for Windows, Version 25.0进行统计分析。使用独立t检验比较两组，p值小于0.05被认为具有统计学意义。Post-Hoc Bonferroni应用于检查任何两组之间发现的统计学差异的任何变化。测量两组患者的NSAr、C3HyD、SArHy和NSHy角度。两组骨骼II类之间的NSAr角和NSHy角具有显著性，p值<0.05，而C3HyD角和SArHy角无显著性。上颌前突与下颌骨后突相比，髁突位置偏前。属于骨骼II类的上颌前突个体舌骨向前向上定位，下颌后突个体舌骨向下向后定位。
{"title":"Correlation between the cranial base, mandible, and hyoid bone in Class II skeletal individuals- A cephalometric study","authors":"A. Shetty, Jaffer Sadik","doi":"10.18231/j.ijodr.2023.019","DOIUrl":"https://doi.org/10.18231/j.ijodr.2023.019","url":null,"abstract":"The aim of this study was to assess the relationship between the cranial base, mandible, and hyoid bone in Class II skeletal individuals. The retrospective study included lateral cephalograms of 40 Skeletal Class II subjects divided into maxillary prognathism (n=20) and mandibular retrognathism(n=20) based on Burstone’s N⊥A and N⊥B values. The angular measurements using 10 variables were used to determine the relationship between the cranial base, mandible, and hyoid bone in Class II subjects. Statistical analyses were performed using IBM SPSS Statistics for Windows, Version 25.0. Armonk, NY: IBM Corp. An Independent t-test was used to compare the two groups and a p-value less than 0.05 was considered statistically significant. Post-Hoc Bonferroni was applied to examine any changes among any two groups that were found to differ statistically. NSAr, C3HyD, SArHy, and NSHy angles were measured in both groups. NSAr and NSHy angles showed significance between the two groups of skeletal class II whose p-value <0.05 whereas C3HyD and SArHy angles did not show any significance. The condylar position was anterior in maxillary prognathism compared to mandibular retrognathism of Skeletal Class II. The hyoid bone was positioned forward and upward in maxillary prognathism individuals and downward and backward in mandibular retrognathism individuals belonging to skeletal class II.","PeriodicalId":269485,"journal":{"name":"IP Indian Journal of Orthodontics and Dentofacial Research","volume":"135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117333748","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 : 2023-06-15DOI: 10.18231/j.ijodr.2023.017
Vaishanavi Mahajan, Merry Goyal, S. Mittal, I. Aggarwal, Avijit Avasthi
Maxillomandibular analysis relates the upper and lower jaw. The anteroposterior relationship of the maxilla and mandible through both angular and linear measurements is used to assess the sagittal jaw relationship. To evaluate skeletal maxillomandibular changes in patients with class I malocclusion after extraction and non-extraction orthodontic treatment in the Solan population. Cephalometric radiographs before and after treatment of 50 orthodontic patients were used in the study. The sample was divided into 2 groups, Group I (Class I, N=25, extraction cases) and Group II (Class I, N=25, non-extraction cases). Maxillomandibular parameters (ANB, Wits Appraisal, Harvold unit length difference, plane angle AB, convexity angle and MKG angle) were measured in both groups. When comparing the two groups, significant changes were observed in the ANB angle (p=0.05), AO-BO (p=0.00), MKG angle (p=0.03) and convexity angle (p=0, 00). Conversely, Harvold (p=0.70) and AB plane angle (p=0.75) were found to be insignificant. The result of the above study indicated that bone maxillomandibular changes in ANB angle, AO-BO, MKG angle and convexity angle can be observed in patients after extraction and non-extraction orthodontic treatment.
{"title":"Maxilomandibular changes in patients with Class I maloclusion – A cephalometric study","authors":"Vaishanavi Mahajan, Merry Goyal, S. Mittal, I. Aggarwal, Avijit Avasthi","doi":"10.18231/j.ijodr.2023.017","DOIUrl":"https://doi.org/10.18231/j.ijodr.2023.017","url":null,"abstract":"Maxillomandibular analysis relates the upper and lower jaw. The anteroposterior relationship of the maxilla and mandible through both angular and linear measurements is used to assess the sagittal jaw relationship. To evaluate skeletal maxillomandibular changes in patients with class I malocclusion after extraction and non-extraction orthodontic treatment in the Solan population. Cephalometric radiographs before and after treatment of 50 orthodontic patients were used in the study. The sample was divided into 2 groups, Group I (Class I, N=25, extraction cases) and Group II (Class I, N=25, non-extraction cases). Maxillomandibular parameters (ANB, Wits Appraisal, Harvold unit length difference, plane angle AB, convexity angle and MKG angle) were measured in both groups. When comparing the two groups, significant changes were observed in the ANB angle (p=0.05), AO-BO (p=0.00), MKG angle (p=0.03) and convexity angle (p=0, 00). Conversely, Harvold (p=0.70) and AB plane angle (p=0.75) were found to be insignificant. The result of the above study indicated that bone maxillomandibular changes in ANB angle, AO-BO, MKG angle and convexity angle can be observed in patients after extraction and non-extraction orthodontic treatment.","PeriodicalId":269485,"journal":{"name":"IP Indian Journal of Orthodontics and Dentofacial Research","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125792294","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}
There has been increase in the treatment modalities for non-surgical Class II malocclusion. This has resulted in orthodontists becoming more vigilant with extraction treatment plans and exploring possible non-extraction treatment approaches. Maxillary molar distalization is one such method. The maxillary molar is distalized to create space and helps in solving the malocclusionMany appliance were used for the distalization of molars over the period of time. Both intra-oral and extra-oral methods are present. The extra oral appliance includes headgear and heavy elastics; whereas intra oral appliance include distal jet, jones jigs, pendulum appliance, k-loop, fixed functional appliances, magnets, ACCO appliance and use of TAD’s. Thus the use of IZC implants has been effective in distalization of molars.
{"title":"Driving the maxillary molar distally with infra-zygomatic crest implant: A case report","authors":"Rahul Rajesh Shah, Shailee Choksi, Sonali Mahadevia, Bhavya Trivedi","doi":"10.18231/j.ijodr.2023.025","DOIUrl":"https://doi.org/10.18231/j.ijodr.2023.025","url":null,"abstract":"There has been increase in the treatment modalities for non-surgical Class II malocclusion. This has resulted in orthodontists becoming more vigilant with extraction treatment plans and exploring possible non-extraction treatment approaches. Maxillary molar distalization is one such method. The maxillary molar is distalized to create space and helps in solving the malocclusionMany appliance were used for the distalization of molars over the period of time. Both intra-oral and extra-oral methods are present. The extra oral appliance includes headgear and heavy elastics; whereas intra oral appliance include distal jet, jones jigs, pendulum appliance, k-loop, fixed functional appliances, magnets, ACCO appliance and use of TAD’s. Thus the use of IZC implants has been effective in distalization of molars.","PeriodicalId":269485,"journal":{"name":"IP Indian Journal of Orthodontics and Dentofacial Research","volume":"58 8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126011049","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 : 2023-06-15DOI: 10.18231/j.ijodr.2023.021
Soumya N.B, Manjusha Kk, A. Bn, Aparna Ma, Reyas Y. Rasool
To conduct a prospective randomized study comparing the efficiency of four different ligation systems (ELL,SSL,LL,PSL) over the duration of mandibular crowding alleviation.The study was conducted in Department of Orthodontics and Dentofacial Orthopaedics, Noorul Islam College of Dental Sciences, Neyyattinkara, Trivandrum. The present study evaluated the variations in alignment efficiency of four different ligation systems over the duration of mandibular crowding alleviation in patients during mandibular crowding alleviation. Eighty patients fulfilling the inclusion criteria were selected and equally divided into four groups- Elastomeric ligation (ELL), Stainless steel Ligation (SSL)- active and passive , Leone slide Ligatures (LL).: The mean treatment time for alignment for passive self ligating group (102 days) followed by leone group (128 days), stainless steel (176 days) and elastomeric (224 days) group. Thus the study showed no significant difference in the clinical performance between coventional, self ligating, while PSL performed significantly superior to other groups. From the above equation, during initial phase of orthodontic treatment.self-ligating brackets were more efficient than conventional brackets in anterior alignment, passive space closure, and mandibular incisal inclination.
{"title":"A prospective randomized clinical study comparing the alignment efficiency of four different ligation methods","authors":"Soumya N.B, Manjusha Kk, A. Bn, Aparna Ma, Reyas Y. Rasool","doi":"10.18231/j.ijodr.2023.021","DOIUrl":"https://doi.org/10.18231/j.ijodr.2023.021","url":null,"abstract":"To conduct a prospective randomized study comparing the efficiency of four different ligation systems (ELL,SSL,LL,PSL) over the duration of mandibular crowding alleviation.The study was conducted in Department of Orthodontics and Dentofacial Orthopaedics, Noorul Islam College of Dental Sciences, Neyyattinkara, Trivandrum. The present study evaluated the variations in alignment efficiency of four different ligation systems over the duration of mandibular crowding alleviation in patients during mandibular crowding alleviation. Eighty patients fulfilling the inclusion criteria were selected and equally divided into four groups- Elastomeric ligation (ELL), Stainless steel Ligation (SSL)- active and passive , Leone slide Ligatures (LL).: The mean treatment time for alignment for passive self ligating group (102 days) followed by leone group (128 days), stainless steel (176 days) and elastomeric (224 days) group. Thus the study showed no significant difference in the clinical performance between coventional, self ligating, while PSL performed significantly superior to other groups. From the above equation, during initial phase of orthodontic treatment.self-ligating brackets were more efficient than conventional brackets in anterior alignment, passive space closure, and mandibular incisal inclination.","PeriodicalId":269485,"journal":{"name":"IP Indian Journal of Orthodontics and Dentofacial Research","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126949785","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 : 2023-06-15DOI: 10.18231/j.ijodr.2023.020
Abrar Younus A, Nivedhita V, K. Balaji, Aishwarrya P, Vedant Chhabria, Saraswati Chandra
Dermatoglyphics is a study of the unique pattern in the skin of fingers, palms, soles, and toes. These dermatoglyphics has played an important role in various fields like forensic medicine, genetics, and anthropology.Sir Francis Galton stated that an individual’s dermal pattern remained constant throughout their lifetime. Many studies have suggested the possible relation between dermatoglyphics and occlusion.Studies have suggested that dermatoglyphics could be used as a tool to identify the underlying skeletal malocclusion. As the dermal pattern and oral structures develop together, the genetic information in the dermal pattern could be used to assess the different types of skeletal malocclusions. Hence, the study was aimed to compare and evaluate the correlation between dermatoglyphics and class II skeletal malocclusion in horizontal and vertical growth patterns. The total of 50 samples were taken and divided into horizontal and vertical growth pattern consisting of 25 samples each. The dermatoglyphic pattern between the right and left hand and the pattern such as arches, loops, and whorls were evaluated. The data was analyzed by Kolmogorov – Smirnov and Shapiro Wilk test. There was a statistically significant association between class 2 malocclusion and the dermatoglyphic pattern.
{"title":"Correlation of dermatoglyphics and Class II skeletal malocclusion – Original research","authors":"Abrar Younus A, Nivedhita V, K. Balaji, Aishwarrya P, Vedant Chhabria, Saraswati Chandra","doi":"10.18231/j.ijodr.2023.020","DOIUrl":"https://doi.org/10.18231/j.ijodr.2023.020","url":null,"abstract":"Dermatoglyphics is a study of the unique pattern in the skin of fingers, palms, soles, and toes. These dermatoglyphics has played an important role in various fields like forensic medicine, genetics, and anthropology.Sir Francis Galton stated that an individual’s dermal pattern remained constant throughout their lifetime. Many studies have suggested the possible relation between dermatoglyphics and occlusion.Studies have suggested that dermatoglyphics could be used as a tool to identify the underlying skeletal malocclusion. As the dermal pattern and oral structures develop together, the genetic information in the dermal pattern could be used to assess the different types of skeletal malocclusions. Hence, the study was aimed to compare and evaluate the correlation between dermatoglyphics and class II skeletal malocclusion in horizontal and vertical growth patterns. The total of 50 samples were taken and divided into horizontal and vertical growth pattern consisting of 25 samples each. The dermatoglyphic pattern between the right and left hand and the pattern such as arches, loops, and whorls were evaluated. The data was analyzed by Kolmogorov – Smirnov and Shapiro Wilk test. There was a statistically significant association between class 2 malocclusion and the dermatoglyphic pattern.","PeriodicalId":269485,"journal":{"name":"IP Indian Journal of Orthodontics and Dentofacial Research","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123939940","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 : 2023-06-15DOI: 10.18231/j.ijodr.2023.023
M. A. Wani, S. Khattri, Anjali Thapa, Shiraz Siddiqui, Mohd. Amir, Mohd Saeedul Jafar
The correction of skeletal malocclusions in orthodontics has always been a contest for clinicians, especially in non-growing individuals, and often necessitates the distalization of maxillary or mandibular skeletal bases. To accomplish this, diverse treatment modalities have been employed by researchers, and the most recent one is the use of extra-alveolar bone screws such as Infra-zygomatic Crest (IZC) implants. Unlike conventional methods such as extraction and orthognathic surgery, this technique is an effective and efficient treatment alternative for predictable total arch distalization in borderline surgical cases, without interfering with the root movements and with minimal dependence on patient compliance. For achieving the displacement of teeth in a bodily controlled manner, an appropriate direction and magnitude of force must be carefully chosen. Therefore, this case report attempts to measure the amount and pattern of maxillary molar distalization using Infra-zygomatic Crest (IZC) implants with long power arms as a workable treatment option, in an 18-year-old female patient with a skeletal Class II pattern, with no extra mini-implants in the anterior region for intrusion.
{"title":"Maxillary total arch distalization with infra-zygomatic crest (IZC) bone screws for the correction of skeletal class II malocclusion: A case report","authors":"M. A. Wani, S. Khattri, Anjali Thapa, Shiraz Siddiqui, Mohd. Amir, Mohd Saeedul Jafar","doi":"10.18231/j.ijodr.2023.023","DOIUrl":"https://doi.org/10.18231/j.ijodr.2023.023","url":null,"abstract":"The correction of skeletal malocclusions in orthodontics has always been a contest for clinicians, especially in non-growing individuals, and often necessitates the distalization of maxillary or mandibular skeletal bases. To accomplish this, diverse treatment modalities have been employed by researchers, and the most recent one is the use of extra-alveolar bone screws such as Infra-zygomatic Crest (IZC) implants. Unlike conventional methods such as extraction and orthognathic surgery, this technique is an effective and efficient treatment alternative for predictable total arch distalization in borderline surgical cases, without interfering with the root movements and with minimal dependence on patient compliance. For achieving the displacement of teeth in a bodily controlled manner, an appropriate direction and magnitude of force must be carefully chosen. Therefore, this case report attempts to measure the amount and pattern of maxillary molar distalization using Infra-zygomatic Crest (IZC) implants with long power arms as a workable treatment option, in an 18-year-old female patient with a skeletal Class II pattern, with no extra mini-implants in the anterior region for intrusion.","PeriodicalId":269485,"journal":{"name":"IP Indian Journal of Orthodontics and Dentofacial Research","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114287946","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 : 2023-03-15DOI: 10.18231/j.ijodr.2023.009
Kratika Mishra, Nazneen Khan, Himanshu Kanungo, Mukesh Gupta
To determine the soft tissue angular photogrammetric standards in Central Indian topics.40 central Indian participants, 20 males and 20 females, ranging in age from 18 to 25, were examined in this study using lateral profile photographs Standardized profile pictures were obtained between the focal lengths of 55 and 200 mm with a camera Canon 1500D macro lens. The data were analysed using SPSS 20.0, a statistical software for social sciences. Using the Kolmogorov-Smirnov test to determine the probability distribution of the data, it was determined that the data were not normally distributed (p value.05).The present study used photogrammetric analysis to develop soft tissue face measures that will help orthodontists undertake more quantitative analysis and reach informed conclusions. By using this photogrammetric approach, the collected mean values may be compared to records of persons who had the same characteristics. There were statistically significant variations in Central India for a few key parameters.
{"title":"Soft tissue photographic norms for central India subjects- A pilot study","authors":"Kratika Mishra, Nazneen Khan, Himanshu Kanungo, Mukesh Gupta","doi":"10.18231/j.ijodr.2023.009","DOIUrl":"https://doi.org/10.18231/j.ijodr.2023.009","url":null,"abstract":"To determine the soft tissue angular photogrammetric standards in Central Indian topics.40 central Indian participants, 20 males and 20 females, ranging in age from 18 to 25, were examined in this study using lateral profile photographs Standardized profile pictures were obtained between the focal lengths of 55 and 200 mm with a camera Canon 1500D macro lens. The data were analysed using SPSS 20.0, a statistical software for social sciences. Using the Kolmogorov-Smirnov test to determine the probability distribution of the data, it was determined that the data were not normally distributed (p value.05).The present study used photogrammetric analysis to develop soft tissue face measures that will help orthodontists undertake more quantitative analysis and reach informed conclusions. By using this photogrammetric approach, the collected mean values may be compared to records of persons who had the same characteristics. There were statistically significant variations in Central India for a few key parameters.","PeriodicalId":269485,"journal":{"name":"IP Indian Journal of Orthodontics and Dentofacial Research","volume":"47 11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114309833","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 : 2023-03-15DOI: 10.18231/j.ijodr.2023.006
Abrar Younus A, Vaishnavi S Kayarkar, Swapnil B Wankhade, Amol A. Verulkar, A. Padmanaban, Sara R. Bhurani
In orthodontic therapy elastics and elastomeric chains are commonly used as an active component. These synthetic elastic materials are not supposed to be ideal, as they are sensitive to prolonged exposure to saliva, water, enzymes, temperature variations and external factors. The main disadvantage of elastomeric auxiliaries is their inability to sustain the delivered force for an extended period of time. The objective of this review is to determine the time taken by the elastomeric chains force to degrade after stretching and to assess oral environment and external factors affect the decay force of elastomeric chains. Databases such as PubMed, Medline, and the Cochrane Library are searched electronically. Additional sources (Google Scholar, clinicaltrails.gov) were manually searched for additional trials or protocols until December 2021 Studies involving in vitro and in vivo exposure of elastomeric chains in various factors like, temperature, saliva, beverages, food, paste, mouthwash, etc were included. 18 studies included primarily focused on the force decay in E-chains and also the associated external factors. The force decay of the Elastomeric chains was affected by time, temperature and environment. The force decay of the elastomeric chains was affected by time, temperature, and environment. The greatest effect on the elastomeric chain is shown by temperature. Force loss increased with increasing temperature, as expected of a viscoelastic material.
{"title":"Force decay of orthodontic elastomeric chains: A systematic review","authors":"Abrar Younus A, Vaishnavi S Kayarkar, Swapnil B Wankhade, Amol A. Verulkar, A. Padmanaban, Sara R. Bhurani","doi":"10.18231/j.ijodr.2023.006","DOIUrl":"https://doi.org/10.18231/j.ijodr.2023.006","url":null,"abstract":"In orthodontic therapy elastics and elastomeric chains are commonly used as an active component. These synthetic elastic materials are not supposed to be ideal, as they are sensitive to prolonged exposure to saliva, water, enzymes, temperature variations and external factors. The main disadvantage of elastomeric auxiliaries is their inability to sustain the delivered force for an extended period of time. The objective of this review is to determine the time taken by the elastomeric chains force to degrade after stretching and to assess oral environment and external factors affect the decay force of elastomeric chains. Databases such as PubMed, Medline, and the Cochrane Library are searched electronically. Additional sources (Google Scholar, clinicaltrails.gov) were manually searched for additional trials or protocols until December 2021 Studies involving in vitro and in vivo exposure of elastomeric chains in various factors like, temperature, saliva, beverages, food, paste, mouthwash, etc were included. 18 studies included primarily focused on the force decay in E-chains and also the associated external factors. The force decay of the Elastomeric chains was affected by time, temperature and environment. The force decay of the elastomeric chains was affected by time, temperature, and environment. The greatest effect on the elastomeric chain is shown by temperature. Force loss increased with increasing temperature, as expected of a viscoelastic material. ","PeriodicalId":269485,"journal":{"name":"IP Indian Journal of Orthodontics and Dentofacial Research","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117187887","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 : 2023-03-15DOI: 10.18231/j.ijodr.2023.003
N. Rahul, Nausheer Ahmed, Abrar Younus A, Uroosa Aymen
This article presents the evolution of dentistry and in particular orthodontics, in India and contribution of Indians to the field of orthodontics. We have come a long way since dental education was first introduced to us Indians, the wave of change brought about by the most esteemed and respectable pioneers of our profession, have led us to form a strong dental community in this world of tough competition. The pioneer of Indian dental education by Dr. H.D. Merchant, who gave first series of lectures in orthodontics. This article also prevents the work of great achievers of orthodontia, who have helped us raise the level of ‘Indian Orthodontics” and have enabled us to soar to greater heights.So, this review article presenting briefly on contributions of Indians to the field of orthodontics from the era of introducing orthodontics as a branch of specilisation of dentistry in India to recent achievements in this field.
{"title":"History and contribution of Indians to orthodotics: A review","authors":"N. Rahul, Nausheer Ahmed, Abrar Younus A, Uroosa Aymen","doi":"10.18231/j.ijodr.2023.003","DOIUrl":"https://doi.org/10.18231/j.ijodr.2023.003","url":null,"abstract":"This article presents the evolution of dentistry and in particular orthodontics, in India and contribution of Indians to the field of orthodontics. We have come a long way since dental education was first introduced to us Indians, the wave of change brought about by the most esteemed and respectable pioneers of our profession, have led us to form a strong dental community in this world of tough competition. The pioneer of Indian dental education by Dr. H.D. Merchant, who gave first series of lectures in orthodontics. This article also prevents the work of great achievers of orthodontia, who have helped us raise the level of ‘Indian Orthodontics” and have enabled us to soar to greater heights.So, this review article presenting briefly on contributions of Indians to the field of orthodontics from the era of introducing orthodontics as a branch of specilisation of dentistry in India to recent achievements in this field.","PeriodicalId":269485,"journal":{"name":"IP Indian Journal of Orthodontics and Dentofacial Research","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115171659","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}
To assess the acceleration of tooth movement in canine retraction and to assess the interleukin 1β level in Gingival Crevicular Fluid. 0.022 slot MBT brackets, 0.018 inch stainless steel arch wire, Low level laser (Gallium-Aluminium-Arsenide Laser), ELISA kit, Micro-capillary tube, Digital Vernier calliper, Dontrics gauge, NiTi closed coil springs Open labelled split mouth, non-experimental interventional institutional based study. By coin toss method, each of the participant’s mouth was randomly assigned either to the laser therapy (group 1) and 40 reference sites (group 2). On the experimental site orthodontic treatment with fixed appliance, a combination with low level laser therapy (Gallium-Aluminium-Arsenide laser) to the canine on the days 3,7,14 and then every 15 days for 2 months was initiated. Then 5µL of Gingival Crevicular Fluid (GCF) was collected to analyse the interleukin 1β levels using the ELIZA kit. The measurements were made with the help of a digital Vernier calliper. The laser group showed a significant greater reduction in the canine to molar distance than the site treated with conventional technique. The interleukin 1 β levels raised significantly for the site treated with laser as compared to the other. We observed that: Increased inflammatory response in the form of raised interleukin levels and Faster distalization of the canine when adjunct with low level soft tissue laser. The entire data was statistically analyzed using Statistical Package for Social Sciences (SPSS version 21.0, IBM Corporation, USA) for MS Windows. In Statistics, unpaired t-test is a used to compare equality of two population means and F-test is used to compare the equality of two population variance using that the samples were drawn from different populations. There was a clinically appreciable amount of retraction seen resulting in faster space closure between the canine and the first permanent molar in the group that had low level laser than the other group that was treated by the conventional therapy. We also observed a considerable rise in the interleukin 1 β levels in the laser group.
0.022槽MBT托槽、0.018英寸不锈钢弓丝、低水平激光(镓铝砷激光)、ELISA试剂盒、微毛细管、数字游标卡尺、Dontrics测量仪、NiTi闭式螺旋弹簧、开放标记裂口、非实验介入机构研究。通过抛硬币的方法，将受试者的每个口腔随机分配到激光治疗组(1组)和40个参考部位(2组)。在固定矫治器治疗的实验部位，在第3、7、14天对犬进行低水平激光治疗(镓铝砷激光)，然后每15天进行一次，持续2个月。取龈沟液(GCF) 5µL, elisa试剂盒检测白细胞介素1β水平。测量是在数字游标卡尺的帮助下进行的。激光组显示，与传统技术治疗的部位相比，犬齿到磨牙的距离明显减少。与其他部位相比，激光治疗部位的白细胞介素1 β水平显著升高。我们观察到:当辅助低水平软组织激光时，炎症反应增加，表现为白细胞介素水平升高和犬的远端化速度加快。使用MS Windows的Statistical Package for Social Sciences (SPSS version 21.0, IBM Corporation, USA)对全部数据进行统计分析。在统计学中，非配对t检验用于比较两个总体均值的相等性，f检验用于比较两个总体方差的相等性，因为样本来自不同的总体。在临床上，低水平激光治疗组的犬齿和第一恒磨牙之间的空间关闭速度比传统治疗组快。我们还观察到激光组白细胞介素1 β水平显著升高。
{"title":"Evaluation of effectiveness of low level laser therapy in accelerating orthodontic tooth movement-An in vivo study","authors":"Ajit J Kalia, Sayali Bobade, S. Nene, Nasim Mirdehghan, Vasu Patil, Azmat Azha Khan","doi":"10.18231/j.ijodr.2023.011","DOIUrl":"https://doi.org/10.18231/j.ijodr.2023.011","url":null,"abstract":"To assess the acceleration of tooth movement in canine retraction and to assess the interleukin 1β level in Gingival Crevicular Fluid. 0.022 slot MBT brackets, 0.018 inch stainless steel arch wire, Low level laser (Gallium-Aluminium-Arsenide Laser), ELISA kit, Micro-capillary tube, Digital Vernier calliper, Dontrics gauge, NiTi closed coil springs Open labelled split mouth, non-experimental interventional institutional based study. By coin toss method, each of the participant’s mouth was randomly assigned either to the laser therapy (group 1) and 40 reference sites (group 2). On the experimental site orthodontic treatment with fixed appliance, a combination with low level laser therapy (Gallium-Aluminium-Arsenide laser) to the canine on the days 3,7,14 and then every 15 days for 2 months was initiated. Then 5µL of Gingival Crevicular Fluid (GCF) was collected to analyse the interleukin 1β levels using the ELIZA kit. The measurements were made with the help of a digital Vernier calliper. The laser group showed a significant greater reduction in the canine to molar distance than the site treated with conventional technique. The interleukin 1 β levels raised significantly for the site treated with laser as compared to the other. We observed that: Increased inflammatory response in the form of raised interleukin levels and Faster distalization of the canine when adjunct with low level soft tissue laser. The entire data was statistically analyzed using Statistical Package for Social Sciences (SPSS version 21.0, IBM Corporation, USA) for MS Windows. In Statistics, unpaired t-test is a used to compare equality of two population means and F-test is used to compare the equality of two population variance using that the samples were drawn from different populations. There was a clinically appreciable amount of retraction seen resulting in faster space closure between the canine and the first permanent molar in the group that had low level laser than the other group that was treated by the conventional therapy. We also observed a considerable rise in the interleukin 1 β levels in the laser group.","PeriodicalId":269485,"journal":{"name":"IP Indian Journal of Orthodontics and Dentofacial Research","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125327952","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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