Pub Date : 2022-12-15DOI: 10.18231/j.ijodr.2022.042
N. Agarwal, S. Fulari, Samidha Suryavanshi
A deep bite is a complex orthodontic problem that is a common feature of many malocclusions. Depending on the diagnosis, a deep overbite can be corrected. Mini implants can be used for the true intrusion of anterior teeth. FEA is a computer based numerical simulation technique used to calculate deflection, stress and displacement. To analyze stress distribution pattern and displacement of mandibular incisors when intrusive forces are applied using three dimensional finite element analysis. To compare intrusion of lower anterior teeth when ‘V’ pattern force and straight vertical pattern force are applied. A three dimensional finite element model was constructed to simulate mandibular teeth, periodontal ligament and alveolar bone. The displacement of individual tooth (central and lateral incisors) on three-dimensional planes and the von Mises stress distribution were compared. Intrusive forces when applied to four mandibular anterior teeth remarkable tipping of the labial segment was seen when straight vertical elastics were used as compared to the ‘V’ shaped elastics. Within the limits of this study, predictable intrusion with minimum labial tipping is seen using single implant using V pattern elastics.
{"title":"Intrusion of mandibular incisors using single mini-implant –A finite element study","authors":"N. Agarwal, S. Fulari, Samidha Suryavanshi","doi":"10.18231/j.ijodr.2022.042","DOIUrl":"https://doi.org/10.18231/j.ijodr.2022.042","url":null,"abstract":"A deep bite is a complex orthodontic problem that is a common feature of many malocclusions. Depending on the diagnosis, a deep overbite can be corrected. Mini implants can be used for the true intrusion of anterior teeth. FEA is a computer based numerical simulation technique used to calculate deflection, stress and displacement. To analyze stress distribution pattern and displacement of mandibular incisors when intrusive forces are applied using three dimensional finite element analysis. To compare intrusion of lower anterior teeth when ‘V’ pattern force and straight vertical pattern force are applied. A three dimensional finite element model was constructed to simulate mandibular teeth, periodontal ligament and alveolar bone. The displacement of individual tooth (central and lateral incisors) on three-dimensional planes and the von Mises stress distribution were compared. Intrusive forces when applied to four mandibular anterior teeth remarkable tipping of the labial segment was seen when straight vertical elastics were used as compared to the ‘V’ shaped elastics. Within the limits of this study, predictable intrusion with minimum labial tipping is seen using single implant using V pattern elastics.","PeriodicalId":269485,"journal":{"name":"IP Indian Journal of Orthodontics and Dentofacial Research","volume":"216 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121977371","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 : 2022-12-15DOI: 10.18231/j.ijodr.2022.040
A. Biçakçi, F. Çelebi, Melike Duran
The aim of this study was to compare the pain perceived in fixed orthodontic and aligner treatments during the first seven days of treatment. Forty patients who had 3–6 mm maxillary dental crowding and a non-extraction treatment plan were included in this study. The subjects were randomly divided into two groups: the fixed orthodontic group and the aligner group, with ten females and ten males in each. In the fixed orthodontic group, treatment was started with 0.014-inch round nickel-titanium archwire, and a 0.018×0.025-inch preadjusted edgewise appliance was used. In the aligner group, treatment was started with a polyurethane aligner. Throughout the study, teeth in the upper jaw were treated in both groups. The pain scores of the subjects were measured with the visual analog scale at the second and sixth hours and on the first, second, third, and seventh days of treatment. The pain scores of the fixed orthodontic group were significantly higher than those of the aligner group at the sixth hour, on the first, second, and third day. The differences at the second hour and on the seventh day were not statistically significant. According to the study outcomes, less pain was felt during the aligner treatment compared to the fixed orthodontic treatment. However, it should be considered that the force activation interval is shorter in the aligner treatment, and the cumulative pain score may be higher.
{"title":"Comparison of pain perception caused by aligner and conventional fixed orthodontic treatments","authors":"A. Biçakçi, F. Çelebi, Melike Duran","doi":"10.18231/j.ijodr.2022.040","DOIUrl":"https://doi.org/10.18231/j.ijodr.2022.040","url":null,"abstract":"The aim of this study was to compare the pain perceived in fixed orthodontic and aligner treatments during the first seven days of treatment. Forty patients who had 3–6 mm maxillary dental crowding and a non-extraction treatment plan were included in this study. The subjects were randomly divided into two groups: the fixed orthodontic group and the aligner group, with ten females and ten males in each. In the fixed orthodontic group, treatment was started with 0.014-inch round nickel-titanium archwire, and a 0.018×0.025-inch preadjusted edgewise appliance was used. In the aligner group, treatment was started with a polyurethane aligner. Throughout the study, teeth in the upper jaw were treated in both groups. The pain scores of the subjects were measured with the visual analog scale at the second and sixth hours and on the first, second, third, and seventh days of treatment. The pain scores of the fixed orthodontic group were significantly higher than those of the aligner group at the sixth hour, on the first, second, and third day. The differences at the second hour and on the seventh day were not statistically significant. According to the study outcomes, less pain was felt during the aligner treatment compared to the fixed orthodontic treatment. However, it should be considered that the force activation interval is shorter in the aligner treatment, and the cumulative pain score may be higher.","PeriodicalId":269485,"journal":{"name":"IP Indian Journal of Orthodontics and Dentofacial Research","volume":"256 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134104435","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 : 2022-10-15DOI: 10.18231/j.ijodr.2022.036
Sharvari Anand Kangarkar, Sangeeta A. Golwalkar, K. Chougule, V. Shetty
The usage of the fixed functional appliances has increased over the years, mainly on the account of minimal demand for patient cooperation with these appliances. Though Forsus appliance provides sufficient activation for skeletal and mandibular correction with crimpable hooks, additional activation may be required in few cases. This clinical tip presents with a efficient and cost effective way for Forsus activation using customized acrylic beads.
{"title":"Custom-made acrylic beads for Forsus reactivation","authors":"Sharvari Anand Kangarkar, Sangeeta A. Golwalkar, K. Chougule, V. Shetty","doi":"10.18231/j.ijodr.2022.036","DOIUrl":"https://doi.org/10.18231/j.ijodr.2022.036","url":null,"abstract":"The usage of the fixed functional appliances has increased over the years, mainly on the account of minimal demand for patient cooperation with these appliances. Though Forsus appliance provides sufficient activation for skeletal and mandibular correction with crimpable hooks, additional activation may be required in few cases. This clinical tip presents with a efficient and cost effective way for Forsus activation using customized acrylic beads.","PeriodicalId":269485,"journal":{"name":"IP Indian Journal of Orthodontics and Dentofacial Research","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123140220","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 : 2022-10-15DOI: 10.18231/j.ijodr.2022.030
Avinash Kumar, Meghna Bhandhari, MD Baba Fareeduddin
Role ofErupting Mandibular 3 molars as a cause of incisor crowding in the lower arch continues to be controversial. The relation between 3 molar and dental crowding has not been established. To determine the area of stress distribution and tooth displacement during eruption of mandibular 3 molar in mesioangular and horizontal impaction. Three dimensional finite element models were generated based on computed tomography scan data. From computed tomographic scans of a human mandible two additional finite element models were generated: a mandibular model with mesioangular impaction and second model with horizontal impaction. To investigate the stress distribution to the mandible, and tooth displacement eruptive force of 10 grams was applied.High concentration of stresses was seen at the inferior border of the mandible and lowest concentration of stress was present at symphysis for both the models. The tooth displacement for both mesio-angular and horizontal impaction caused mesial tilting of all the teeth i.e. from 2 molar to central incisor; with greatest tilting of 2 molar. Along the vertical plane, there was extrusion seen with 2 molar with mesio-angular impaction and extrusion in 2 molar and 1 molar with horizontal impaction And all the teeth exhibited buccal flaring in case of both impaction. There is significant level of tooth displacement from 2 molar towards the incisors. These changes occurring along the dental arch must be taken into consideration while planning for prophylactic extraction of third molars.
{"title":"The effects of erupting mandibular 3 molar on the dental arch: A FEM study","authors":"Avinash Kumar, Meghna Bhandhari, MD Baba Fareeduddin","doi":"10.18231/j.ijodr.2022.030","DOIUrl":"https://doi.org/10.18231/j.ijodr.2022.030","url":null,"abstract":"Role ofErupting Mandibular 3 molars as a cause of incisor crowding in the lower arch continues to be controversial. The relation between 3 molar and dental crowding has not been established. To determine the area of stress distribution and tooth displacement during eruption of mandibular 3 molar in mesioangular and horizontal impaction. Three dimensional finite element models were generated based on computed tomography scan data. From computed tomographic scans of a human mandible two additional finite element models were generated: a mandibular model with mesioangular impaction and second model with horizontal impaction. To investigate the stress distribution to the mandible, and tooth displacement eruptive force of 10 grams was applied.High concentration of stresses was seen at the inferior border of the mandible and lowest concentration of stress was present at symphysis for both the models. The tooth displacement for both mesio-angular and horizontal impaction caused mesial tilting of all the teeth i.e. from 2 molar to central incisor; with greatest tilting of 2 molar. Along the vertical plane, there was extrusion seen with 2 molar with mesio-angular impaction and extrusion in 2 molar and 1 molar with horizontal impaction And all the teeth exhibited buccal flaring in case of both impaction. There is significant level of tooth displacement from 2 molar towards the incisors. These changes occurring along the dental arch must be taken into consideration while planning for prophylactic extraction of third molars.","PeriodicalId":269485,"journal":{"name":"IP Indian Journal of Orthodontics and Dentofacial Research","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121882977","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 : 2022-10-15DOI: 10.18231/j.ijodr.2022.032
R. Kumar, V. Misra, Divya Joshi, A. Yadav, Sonal Attri, S. Johnson
Prevention of unwanted post-treatment changes remains one of the biggest challenges in orthodontics. Retention using removable appliance is important, which can alter the oral hygiene and oral microbial flora, overall increase in the Streptococcus mutans can lead to caries formation which can lead to a missing tooth that can spoil the overall appearance of the patient. 24 post orthodontic subjects were divided in to two groups and group I was given Essix retainer and Group II was given Hawleys Retainer, Supra gingival plaque collected and bacterial colony count done using digital colony counter OHI-S and PI are recorded at T0 (start of treatment) T1 (30 days) T2 (60 days). Essix group has a significant increase in the streptococcus mutans count OHI-S and PI scores are higher for hawleys retainer group. This study advocates the use of a better appliance which along with aesthetics can also ensure better oral hygiene Care should be taken to provide detailed hygiene instructions for both appliance and teeth.
{"title":"Post orthodontic periodontal evaluation of patients with different removable retainers: Hawleys Vs Essix","authors":"R. Kumar, V. Misra, Divya Joshi, A. Yadav, Sonal Attri, S. Johnson","doi":"10.18231/j.ijodr.2022.032","DOIUrl":"https://doi.org/10.18231/j.ijodr.2022.032","url":null,"abstract":"Prevention of unwanted post-treatment changes remains one of the biggest challenges in orthodontics. Retention using removable appliance is important, which can alter the oral hygiene and oral microbial flora, overall increase in the Streptococcus mutans can lead to caries formation which can lead to a missing tooth that can spoil the overall appearance of the patient. 24 post orthodontic subjects were divided in to two groups and group I was given Essix retainer and Group II was given Hawleys Retainer, Supra gingival plaque collected and bacterial colony count done using digital colony counter OHI-S and PI are recorded at T0 (start of treatment) T1 (30 days) T2 (60 days). Essix group has a significant increase in the streptococcus mutans count OHI-S and PI scores are higher for hawleys retainer group. This study advocates the use of a better appliance which along with aesthetics can also ensure better oral hygiene Care should be taken to provide detailed hygiene instructions for both appliance and teeth.","PeriodicalId":269485,"journal":{"name":"IP Indian Journal of Orthodontics and Dentofacial Research","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128955003","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 : 2022-10-15DOI: 10.18231/j.ijodr.2022.025
S. Verma, Noor Zaman Jhanjhi, T. Tikku, Rohit Khanna, K. Srivastava, R. Maurya
Bilateral facial symmetry is rare, however clinically obvious facial asymmetry is of concern. Facial asymmetry results not only in functional, but also esthetic issues. Asymmetries could have pathological, traumatic, functional or developmental causal factors. Lip prints are unique to an individual just like the fingerprints and shows strong hereditary pattern and are useful in forensic science for identification in mass disaster, sex determination and criminal cases etc. Though facial asymmetry is generally evaluated using facial photograph or PA ceph but it was decided to see if there is variation in chieloscopic pattern in subjects with facial asymmetry. Considering this, it was decided to compare cheiloscopic pattern between subjects with clinically obvious facial asymmetry to normal subjects with no clinically obvious facial asymmetry.Cheiloscopic pattern of 30 subjects were equally divided in 2 groups based on clinical examination-GROUP 1(normal with no facial asyemmtry) GROUP II (subjects with obvious facial asymmetry) and their cheiloscopic pattern was recorded using photo paper and lipstick. Groove pattern of lip print was assessed as per Tsuchihashi classification-Type I-Complete vertical grooves, Type I’-partial vertical grooves, Type II-forked grooves, Type III-intersected grooves, Type IV-reticular, Type V-undetermined. The assessment was done in 3 zones each (C-centre, R-right, L-left).Adequate statistical comparison were made.For right zone, Type I’ was most common, both for Group I (40%) and Group II (46.7%). In centre zone, Type I was most common (46.7%) followed by Type II for group I, Type II was most common (40%) followed by Type I(33.3%)for Group II. On left side, Type I and I’ are most common(26%) followed by Type II(20%) for Group I and Type I’ (46.6%) is most common followed by Type I and Type II for Group II. There was no statistical significant difference between the type of lip pattern for two groups in each zone (C,R.L).Within the limitation of the study done on smaller sample size it can be stated that chieloscopic pattern did not show variation with facial asymmetry.
{"title":"Assessment of cheiloscopic pattern in subjects with clinically obvious facial asymmetry","authors":"S. Verma, Noor Zaman Jhanjhi, T. Tikku, Rohit Khanna, K. Srivastava, R. Maurya","doi":"10.18231/j.ijodr.2022.025","DOIUrl":"https://doi.org/10.18231/j.ijodr.2022.025","url":null,"abstract":"Bilateral facial symmetry is rare, however clinically obvious facial asymmetry is of concern. Facial asymmetry results not only in functional, but also esthetic issues. Asymmetries could have pathological, traumatic, functional or developmental causal factors. Lip prints are unique to an individual just like the fingerprints and shows strong hereditary pattern and are useful in forensic science for identification in mass disaster, sex determination and criminal cases etc. Though facial asymmetry is generally evaluated using facial photograph or PA ceph but it was decided to see if there is variation in chieloscopic pattern in subjects with facial asymmetry. Considering this, it was decided to compare cheiloscopic pattern between subjects with clinically obvious facial asymmetry to normal subjects with no clinically obvious facial asymmetry.Cheiloscopic pattern of 30 subjects were equally divided in 2 groups based on clinical examination-GROUP 1(normal with no facial asyemmtry) GROUP II (subjects with obvious facial asymmetry) and their cheiloscopic pattern was recorded using photo paper and lipstick. Groove pattern of lip print was assessed as per Tsuchihashi classification-Type I-Complete vertical grooves, Type I’-partial vertical grooves, Type II-forked grooves, Type III-intersected grooves, Type IV-reticular, Type V-undetermined. The assessment was done in 3 zones each (C-centre, R-right, L-left).Adequate statistical comparison were made.For right zone, Type I’ was most common, both for Group I (40%) and Group II (46.7%). In centre zone, Type I was most common (46.7%) followed by Type II for group I, Type II was most common (40%) followed by Type I(33.3%)for Group II. On left side, Type I and I’ are most common(26%) followed by Type II(20%) for Group I and Type I’ (46.6%) is most common followed by Type I and Type II for Group II. There was no statistical significant difference between the type of lip pattern for two groups in each zone (C,R.L).Within the limitation of the study done on smaller sample size it can be stated that chieloscopic pattern did not show variation with facial asymmetry.","PeriodicalId":269485,"journal":{"name":"IP Indian Journal of Orthodontics and Dentofacial Research","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127949021","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 : 2022-10-15DOI: 10.18231/j.ijodr.2022.029
R. Maurya, Akansha Chauhan, Rohit Khanna, T. Tikku, S. Verma, K. Srivastava
Various types of appliances have been tried by the Orthodontists for the fixed orthodontic treatment. Irrespective of the appliance used the main goal of retraction of anterior teeth in extraction cases is to keep the vertical dimension stable so as not to allow downward and backward rotation of mandible. The aim of this study was to compare changes in mandibular rotation following fixed orthodontic treatment on subjects who have undergone extraction of all first premolars.Pre and post treatment lateral Cephalogram of 25 subjects were taken (13 females and 12males), aged 18-25 years and the tracings were done using Nemoceph software. Parameters assessed were facial height (anterior and posterior), mandibular plane angle (FMA & SN-GoGn), and Jarabak ratio. Student t-test was used to make statistical comparison.Mean difference of SN-GoGn (0.15 ±0.07), FMA (0.23 ±0.52), Anterior facial height (0.18±0.01) and posterior height (0.45±0.01) and Jarabak ratio (0.47±0.32) did not show statistically significant difference between pre and post treat ment.Mandibular plane did not alter during treatment. When adequate mechanics is followed during treatment desirable treatment outcome with insignificant alteration of mandibular plane can be achieved.
{"title":"Assessment and comparison of palatal rugae pattern in clinically obvious ND non obvious asymmetrical patients","authors":"R. Maurya, Akansha Chauhan, Rohit Khanna, T. Tikku, S. Verma, K. Srivastava","doi":"10.18231/j.ijodr.2022.029","DOIUrl":"https://doi.org/10.18231/j.ijodr.2022.029","url":null,"abstract":"Various types of appliances have been tried by the Orthodontists for the fixed orthodontic treatment. Irrespective of the appliance used the main goal of retraction of anterior teeth in extraction cases is to keep the vertical dimension stable so as not to allow downward and backward rotation of mandible. The aim of this study was to compare changes in mandibular rotation following fixed orthodontic treatment on subjects who have undergone extraction of all first premolars.Pre and post treatment lateral Cephalogram of 25 subjects were taken (13 females and 12males), aged 18-25 years and the tracings were done using Nemoceph software. Parameters assessed were facial height (anterior and posterior), mandibular plane angle (FMA & SN-GoGn), and Jarabak ratio. Student t-test was used to make statistical comparison.Mean difference of SN-GoGn (0.15 ±0.07), FMA (0.23 ±0.52), Anterior facial height (0.18±0.01) and posterior height (0.45±0.01) and Jarabak ratio (0.47±0.32) did not show statistically significant difference between pre and post treat ment.Mandibular plane did not alter during treatment. When adequate mechanics is followed during treatment desirable treatment outcome with insignificant alteration of mandibular plane can be achieved.","PeriodicalId":269485,"journal":{"name":"IP Indian Journal of Orthodontics and Dentofacial Research","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127803890","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 : 2022-10-15DOI: 10.18231/j.ijodr.2022.034
V. Bhatt, Tejas Motiwale, G. Mitra
The management of mandibular fractures has evolved from closed reduction to open reduction. Champy’s miniplates have become highly popular and is a time-tested method of treatment of mandibular fractures. However, advances like 3D miniplate with claimed advantages like requires less armamentarium, providing better occlusal stabilityEvaluative study conducted in 24 patients & randomly divided in 2 groups, use of 3D miniplate vs conventional miniplates in anterior mandibular fractures, age group 15-90, post-operative evaluation at day 1, 7 & 3 month, fracture stability, mobility of fracture fragment, complications & bite force. The level of significance was fixed at 5% and p ≤ 0.05 was considered statistically significant. 3D mini plating system (p value:- .001)have lesser operating time when compared to 2D conventional miniplating system, also 3D miniplate system have better intraoperative and lesser complications, significantly better bite force results (p value .002*(s)) with 3D miniplate compared to 2D conventional miniplating system.3D miniplate a novel form of plating system with better intraoperative and post operative results, better stability compared to conventional miniplating system.
{"title":"Evaluation of the efficacy of Three-dimensional mini plates versus conventional mini plates used in the management of anterior mandibular fractures","authors":"V. Bhatt, Tejas Motiwale, G. Mitra","doi":"10.18231/j.ijodr.2022.034","DOIUrl":"https://doi.org/10.18231/j.ijodr.2022.034","url":null,"abstract":"The management of mandibular fractures has evolved from closed reduction to open reduction. Champy’s miniplates have become highly popular and is a time-tested method of treatment of mandibular fractures. However, advances like 3D miniplate with claimed advantages like requires less armamentarium, providing better occlusal stabilityEvaluative study conducted in 24 patients & randomly divided in 2 groups, use of 3D miniplate vs conventional miniplates in anterior mandibular fractures, age group 15-90, post-operative evaluation at day 1, 7 & 3 month, fracture stability, mobility of fracture fragment, complications & bite force. The level of significance was fixed at 5% and p ≤ 0.05 was considered statistically significant. 3D mini plating system (p value:- .001)have lesser operating time when compared to 2D conventional miniplating system, also 3D miniplate system have better intraoperative and lesser complications, significantly better bite force results (p value .002*(s)) with 3D miniplate compared to 2D conventional miniplating system.3D miniplate a novel form of plating system with better intraoperative and post operative results, better stability compared to conventional miniplating system.","PeriodicalId":269485,"journal":{"name":"IP Indian Journal of Orthodontics and Dentofacial Research","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126388938","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 : 2022-10-15DOI: 10.18231/j.ijodr.2022.026
S. Verma, Rigzing O. Lepcha, Rohit Khanna, T. Tikku, R. Maurya, K. Srivastava
Social and psychological concerns, improved function, appearance, and self-esteem encourages a patient to pursue Orthodontic treatment, for which extraction may or may not be needed.Conventionally steiner stick analysis or tweed head plate correction is followed to decide extraction during fixed orthodontic treatment for desirable treatment outcome. This study was designed to compare predicted position and angulation of maxillary and mandibular incisor by steiner stick analysis with the actual treatment outcome using memotech software.Sample was taken from our department consisting of pre and post treatment lateral cephalogram of 15 subject with age ranging from 20- 22years. Tracing was done using Nemotech software and values for Steiner’s analysis was obtained, both for, pre and post treatment tracing. Prediction was done by Steiner Stick analysis(SSA) on the pre treatment tracing.The position and angulation of Maxillary and Mandibular incisor was compared between prediction based on SSA and post treatment outcome. The parameters taken were U1-NA Linear and U1-NA angular and L1-NB Linear and L1-NB angular and comparison were made using Paired Student T test.: No significant difference was seen in U1-NA distance in (mm) and angulation(degree) Compared between predicted values(U1-NA- 2.478mm, 20.53 degree) and post treatment outcome (U1-NA-2.80mm, 22.733 degree) , p>0.05. Similarly no significant difference was seen in L1-NB distance (mm) compared between predicted (L1-NB 3.1227mm) and post treatment outcome(3.487 mm), p>0.05. However significant difference was seen for L1-NB angulation between predicted (22.573) and actual post treatment outcome(26.02), p<0.05.: Steiner Stick Analysis overestimated the values for angulation for Mandibular Incisors. This could be attributed to variability in mechanics or small size sample. Further studies should aim at comparisons done in larger sample size.
{"title":"Comparision of predicted and actual treatment outcome based on steiner cephalometric analysis using nemotech software","authors":"S. Verma, Rigzing O. Lepcha, Rohit Khanna, T. Tikku, R. Maurya, K. Srivastava","doi":"10.18231/j.ijodr.2022.026","DOIUrl":"https://doi.org/10.18231/j.ijodr.2022.026","url":null,"abstract":"Social and psychological concerns, improved function, appearance, and self-esteem encourages a patient to pursue Orthodontic treatment, for which extraction may or may not be needed.Conventionally steiner stick analysis or tweed head plate correction is followed to decide extraction during fixed orthodontic treatment for desirable treatment outcome. This study was designed to compare predicted position and angulation of maxillary and mandibular incisor by steiner stick analysis with the actual treatment outcome using memotech software.Sample was taken from our department consisting of pre and post treatment lateral cephalogram of 15 subject with age ranging from 20- 22years. Tracing was done using Nemotech software and values for Steiner’s analysis was obtained, both for, pre and post treatment tracing. Prediction was done by Steiner Stick analysis(SSA) on the pre treatment tracing.The position and angulation of Maxillary and Mandibular incisor was compared between prediction based on SSA and post treatment outcome. The parameters taken were U1-NA Linear and U1-NA angular and L1-NB Linear and L1-NB angular and comparison were made using Paired Student T test.: No significant difference was seen in U1-NA distance in (mm) and angulation(degree) Compared between predicted values(U1-NA- 2.478mm, 20.53 degree) and post treatment outcome (U1-NA-2.80mm, 22.733 degree) , p>0.05. Similarly no significant difference was seen in L1-NB distance (mm) compared between predicted (L1-NB 3.1227mm) and post treatment outcome(3.487 mm), p>0.05. However significant difference was seen for L1-NB angulation between predicted (22.573) and actual post treatment outcome(26.02), p<0.05.: Steiner Stick Analysis overestimated the values for angulation for Mandibular Incisors. This could be attributed to variability in mechanics or small size sample. Further studies should aim at comparisons done in larger sample size.","PeriodicalId":269485,"journal":{"name":"IP Indian Journal of Orthodontics and Dentofacial Research","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133518599","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 : 2022-10-15DOI: 10.18231/j.ijodr.2022.033
Avinash Kumar, Sudheer Karanam, MD Baba Fareeduddin
Many studies have reported on the application and clinical efficiency of full arch maxillary dentition intrusion mechanics; however, studies about biomechanical effects such as stress, strain, and displacements on the teeth and the surrounding tissues are limited. The objectives of study was to evaluate and compare the stress distribution and displacement of total maxillary dentition under intrusion mechanics using a three-dimensional finite element analysisA three-dimensional finite element model was constructed based on computed tomography scan data, and it served basic model. The geometric model was converted to finite element model using Altair HyperMesh software. Model A with pre-adjusted edgewise appliance (PEA) setup and Model B with occlusal Splint setup was evaluated and compared for von mises stress distribution and displacement of total (full arch) maxillary dentition by using three dimensional finite element analysis; with force delivered from infrazygomatic screws and miniscrew. Force levels for Model A and Model B includes a total of 300grams of intrusive force (each side) on maxillary posterior segment from IZC bone screw and 100grams of intrusive force on anterior segment from miniscrew.In the model A; with PEA setup reinforced with two trans-palatal arches, highest von Mises stress of 0.970 Mpa was produced on second molar roots followed by molar roots and premolars and central and lateral incisors roots. In the Model A, maximum intrusive values was seen on crown tip of central and lateral incisors (8.671µm), and lowest displacement values on second molars (2.230µm). Similar pattern of von Mises stress distribution and displacement was observed in the Model B. Model A and Model B provided an effective en masse vertical control of the full arch maxillary dentition. Higher intrusion displacement values were seen in anterior segment than the posterior segments
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