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1.  Case Reports
Pseudo-Class III: Diagnosis and Simplistic Treatment
Sharanya Ajit Kumar, K Sadashiva Shetty, AT Prakash
[Year:2011] [Month:October-December] [Volume:45 ] [Number:4] [Pages:53] [Pages No:198-201]
Full Text PDF | Abstract | DOI : 10.5005/jp-journals-10021-1035 | FREE

ABSTRACT
To present a diagnostic assessment of a pseudo-Class III malocclusion and a simple approach to its treatment, using a modified quad helix appliance.
Materials and methods: A 10-year-old male patient, in the mixed dentition stage, presented with anterior crossbite, Class I skeletal base with an ANB angle of 1 degree, retroclined maxillary incisors and an anterior mandibular slide from the point of initial contact to maximum intercuspation. A modified quad helix appliance, made of 0.036° Blue Elgiloy with anterior extension arms, was fabricated and soldered to bands on the first permanent maxillary molars. The appliance was expanded 4 mm per side, to correct the malocclusion and the functional shift.
Results: After treatment, the patient presented with normal overjet and overbite, class I relation, bilaterally and an improved smile. The speech and function also improved considerably.
Keywords:Pseudo-Class III, Quad helix, Anterior glide, Mandibular shift.
How to Cite:
Kumar SA, Shetty KS, Prakash AT. Pseudo-Class III: Diagnosis and Simplistic Treatment. J Ind Orthod Soc 2011;45(4):198-201.

 
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2.  Case Reports
Bilateral Maxillary Canine-Premolar Transposition
Nishant Kuttapa, US Krishna Nayak, Ashutosh Shetty, PS Murali
[Year:2011] [Month:October-December] [Volume:45 ] [Number:4] [Pages:53] [Pages No:193-197]
Full Text PDF | Abstract | DOI : 10.5005/jp-journals-10021-1034 | FREE

ABSTRACT
Tooth transposition is a severe disturbance of tooth order and eruptive position, involving certain teeth that may occur at any of the several sites in the mouth. Maxillary canine-first premolar (MxCP1) transposition is the most frequent tooth transposition. This case report presents the treatment of female patient with bilateral maxillary canine-premolar transposition. The order of transposition was maintained during the treatment.
Keywords:Bilateral canine transposition, Maxillary canine to first premolar, Ectopic eruption, Orthodontic management.
How to Cite:
Kuttapa N, Nayak USK, Shetty A, Murali PS. Bilateral Maxillary Canine-Premolar Transposition. J Ind Orthod Soc 2011;45(4):193-197.

 
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3.  Original Articles
Evaluation of Slot Size in Orthodontic Brackets: Are Standards as Expected?
Vinaya S Pai, Sandesh S Pai, Siri Krishna, M Swetha
[Year:2011] [Month:October-December] [Volume:45 ] [Number:4] [Pages:53] [Pages No:169-174]
Full Text PDF | Abstract | DOI : 10.5005/jp-journals-10021-1030 | FREE

ABSTRACT
The early pioneers of orthodontics, like Angle, Kingsley and Farrar, devised appliances that have now evolved into what is known as the preadjusted edgewise appliance. With the introduction of preadjusted appliances, the focus has moved to customization of brackets to achieve specific and exact positioning of the dentition. These preprogramed features of the orthodontic bracket can be completely effective only if the bracket slot is accurate.
Aims and objectives: The purpose of this study is to evaluate the slot size of eight different commercially available straight wire brackets of 0.018 inch slot and 0.022 inch slot with two different measuring devices.
Materials and methods: Out of 80 straight wire brackets (Roth), 40 each of 0.018 inch slot and 0.022 inch slot from four commercially available manufacturers (3M Unitek, TP, Ortho Organizers and Ormco) were used for the study. Each bracket sample from all the eight groups was measured for its slot size at the top and the base of the slot using two different measuring devices namely Starrett profile projector and PrakaVision profile projector. Both the measuring devices give a digital read out to the accuracy of 0.001 mm. Data obtained were subjected to statistical analysis.
Results: The slot size for ortho organizer-0.018 inch slot brackets was very close to the standard, whereas the other brackets were either oversized or undersized as compared to the standard.
Keywords:Brackets, PrakaVision profile projector, Slot size, Starrett profile projector, Standard.
How to Cite:
Pai VS, Pai SS, Krishna S, Swetha M. Evaluation of Slot Size in Orthodontic Brackets: Are Standards as Expected? J Ind Orthod Soc 2011;45(4):169-174.

 
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4.  Original Articles
A Comparative Study of Orthodontic Coil Springs
Deepak Kumar Agarwal, Anup Razdan, Abhishek Agarwal, Preeti Bhattacharya, Ankur Gupta, DN Kapoor
[Year:2011] [Month:October-December] [Volume:45 ] [Number:4] [Pages:53] [Pages No:160-168]
Full Text PDF | Abstract | DOI : 10.5005/jp-journals-10021-1029 | FREE

ABSTRACT
Several types of force delivering system are used to carry out tooth movement in orthodontics. Coil springs being one of them are used for the same thus requiring minimal operator manipulation.
Aims and objectives: The purpose of this study was to determine the effect of wire diameter, lumen size and length of coil spring on the load produced as a function of displacement of SS and NiTi coil spring.
Materials and methods: The study consisted of 60 samples of open and closed coil springs (30 each). Open coil springs were tested in compression and closed coil spring in tension using a Lloyd universal testing machine. The data obtained was subjected to statistical analysis using student’s t-test.
Results: Mean values, standard deviation and t-value were calculated. Statistically significant difference were obtained in between the groups (p < 0.05), (p < 0.001).
Discussion: The heaviest load value at 60% compression was recorded in 0.010 × 0.030 spring with 20 cm initial length due to its large wire diameter and reduced lumen size among the coil springs tested. Straight line of load deflection curve bears clinical significance due to unpredictable behavior of spring beyond a certain limit. Permanent deformation exhibited by SS coil spring is due to high stiffness is low spring fact.
Conclusion: Coil linear load delivered by SS open coil springs on compression changes the original length from 33 to 50% which depends on wire diameter and lumen size of coil spring.
Keywords: NiTi open and closed coil spring, SS open and closed coil spring, Loading, Unloading, Lumen size, Wire diameter and length of spring.
How to Cite:
Agarwal DK, Razdan A, Agarwal A, Bhattacharya P, Gupta A, Kapoor DN. A Comparative Study of Orthodontic Coil Springs. J Ind Orthod Soc 2011;45(4):160-168.

 
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5.  Clinical Innovations
A New 2D Bracket-Positioning Gauge
Narendra Shriram Sharma, Sunita S Shrivastav, Pushpa V Hazarey
[Year:2011] [Month:October-December] [Volume:45 ] [Number:4] [Pages:53] [Pages No:202-204]
Full Text PDF | Abstract | DOI : 10.5005/jp-journals-10021-1036 | FREE

ABSTRACT
Orthodontists have used a variety of hand-held dental instruments to position the brackets for direct bonding. A number of instruments, including the Boone and Dougherty gauges, have been used for accurate positioning of brackets in direct bonding. Although position adjustments can be made with such an instrument, the bracket can easily slip when the instrument is removed. Indirect bonding may be a solution, but it is time-consuming and does not provide for precise repositioning of brackets that fall off.
We have developed a gauge that allows accurate, reproducible bracket placement at 3 to 6 mm from the instrument base.
Keywords:Boone and Dougherty gauges, Bracket placement, Metallic or wooden jigs.
How to Cite:
Sharma NS, Shrivastav SS, Hazarey PV. A New 2D Bracket-Positioning Gauge. J Ind Orthod Soc 2011;45(4):202-204.

 
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6.  Original Articles
Frictional Characteristics of Active and Passive Self-Ligation Bracket Systems: An in vitro Study
KM Shahul Hameed Faizee, Subu Thomas, Nathamuni Rangarajan Krishnaswamy
[Year:2011] [Month:October-December] [Volume:45 ] [Number:4] [Pages:53] [Pages No:154-159]
Full Text PDF | Abstract | DOI : 10.5005/jp-journals-10021-1028 | FREE

ABSTRACT
Self-ligating brackets are ligatureless bracket systems which are gaining immense popularity in contemporary orthodontics. Compared with conventional appliances, self-ligating mechanisms attribute their increased efficiency and reduced treatment time to their improved frictional characteristics.
Aim: The present study was conducted to evaluate the kinetic frictional resistance of four self-ligating brackets: Two active types, (SpeedTM and In-Ovation® R) two passive types (Damon 3 and SmartClip) and compare them with conventional brackets ligated with elastomeric module. The brackets were tested against five different dimensions of round and rectangular stainless steel wires (0.018, 0.020, 0.017 × 0.025, 0.019 × 0.025, 0.021 × 0.025).
Materials and methods: A universal testing machine (Auto Graph AGS-J Series) was used to determine the frictional resistance to sliding movements. The test readings were statistically analyzed with a one-way ANOVA, post-hoc Tukey’s test for multiple comparisons and Student’s t-tests using SPSS software.
Results: Damon 3 brackets exhibited least kinetic frictional resistance to sliding movement for all the archwires tested followed by SmartClip, In-Ovation and Speed respectively. Maximum resistance was recorded for conventional twin brackets ligated with elastomeric modules. There was also increase in the frictional force value with increase in wire dimensions.
Conclusion: Self-ligating brackets offered less frictional resistance than conventional brackets. Passive bracket systems offered less frictional resistance than active self-ligating bracket systems and Damon 3 brackets offered the least frictional resistance among all the brackets studied.
Keywords: Self-ligating brackets, Frictional resistance, Sliding mechanics, Archwires.
How to Cite:
Faizee KMSH, Thomas S, Krishnaswamy NR. Frictional Characteristics of Active and Passive Self-Ligation Bracket Systems: An in vitro Study. J Ind Orthod Soc 2011;45(4):154-159.

 
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7.  Original Articles
Reliability of Glass Bead Sterilization for Tried-in Orthodontic Bands
Saugat Ray, Sukhbir Singh Chopra, Rajat Mitra, Amit Jain
[Year:2011] [Month:October-December] [Volume:45 ] [Number:4] [Pages:53] [Pages No:189-192]
Full Text PDF | Abstract | DOI : 10.5005/jp-journals-10021-1033 | FREE

ABSTRACT
Objective: To evaluate the efficacy of two methods of sterilization for the decontamination of tried-in orthodontic bands after initial cleaning procedures.
Materials and methods: A total of 68 molar bands were tried-in mouth of 17 patients. After try-in, 60 bands were cleaned in ultrasonic cleaning bath and then were equally divided into two groups (n = 30). Bands from group 1 were autoclaved in benchtop autoclave. Bands from group 2 were sterilized in glass bead sterilizer. After sterilization, the bands from both the groups were incubated in 50 ml brain heart infusion (BHI) broth. Eight remaining bands were neither cleaned nor sterilized. They served as positive control and were directly incubated in BHI broth. One bottle of BHI broth which did not contain any orthodontic band, served as negative control was incubated. Incubation of BHI broth for all the groups was done at 37°C for 5 days. After 5 days of incubation, BHI broth samples from all the groups were taken and incubated in blood agar culture medium.
Results: All the groups except the positive control group did not show any turbidity in the BHI broth and growth in blood agar culture media. The broth containing positive control group had increase turbidity after 5 days and growth of gram-positive cocci in blood agar culture media.
Conclusion:Glass bead sterilization is equally effective as benchtop autoclave for sterilization of orthodontic bands.
Keywords:Glass bead, Sterilization, Orthodontic bands.
How to Cite:
Ray S, Chopra SS, Mitra R, Jain A. Reliability of Glass Bead Sterilization for Tried-in Orthodontic Bands. J Ind Orthod Soc 2011;45(4):189-192.

 
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8.  Original Articles
A Comparative Evaluation of Separation Effect and Perception of Pain using Two Different Orthodontic Separators
Achint Juneja, Dinesh K Bagga, Rakesh Sharma, Payal Sharma
[Year:2011] [Month:October-December] [Volume:45 ] [Number:4] [Pages:53] [Pages No:183-188]
Full Text PDF | Abstract | DOI : 10.5005/jp-journals-10021-1032 | FREE

ABSTRACT
Objective: To compare the time taken to achieve adequate separation of tooth contact and perception of pain associated with it using elastomeric and spring separators.
Materials and methods: A total of 60 subjects (30 males, 30 females) in the age range of 18 to 25 years were divided into three groups with 20 subjects each (10 males and 10 females). Group 1, 2 and 3 were evaluated after 1, 2 and 3 days of separator placement respectively for the degree of separation and pain perception. Two types of separators namely elastomeric and spring separators were placed, at the mesial and distal contacts of the first permanent molars in the maxillary and mandibular arches. The amount of separation at each contact point was measured with the help of the feeler gauge and discomfort level was recorded on verbal rating scale.
Results: Both types of separators achieved adequate separation after 2 days of separator placement. There was no genderwise difference in the amount of separation and time taken for separation as well as pain perception with either of the separators. The intensity of pain remained mild-to-moderate on VRS scale scoring 2 to 3 with either of separators. The pain was worst after 2 days of separator placement and declined after 3 days irrespective of the type of separators.
Conclusion: Both types of the separators are comparable for separation effect and pain perception associated with them. Molar band fitting should be done at least 3 days after inserting either of the separators.
Keywords:Separators, Pain perception, Spring separator.
How to Cite:
Juneja A, Bagga DK, Sharma R, Sharma P. A Comparative Evaluation of Separation Effect and Perception of Pain using Two Different Orthodontic Separators. J Ind Orthod Soc 2011;45(4):183-188.

 
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9.  Original Articles
The Effects of Various In-Office Reconditioning Methods on Shear Bond Strength, Morphology of Slots and Bases of Stainless Brackets: An in vitro Study
Nidhi Bansal, Ashima Valiathan, Kshitij Bansal
[Year:2011] [Month:October-December] [Volume:45 ] [Number:4] [Pages:53] [Pages No:175-182]
Full Text PDF | Abstract | DOI : 10.5005/jp-journals-10021-1031 | FREE

ABSTRACT
Aim: The aim of the present study was to evaluate and compare the effects of six in-office reconditioning methods (direct flaming, sandblasting, modified BigJane machine method, direct flaming followed by sandblasting, flaming followed by electropolishing, Buchman method) on standard edgewise metallic brackets.
Materials and methods: One hundred and five brackets were divided into seven groups. The six experimental brackets were reconditioned using six different reconditioning methods. The brackets were rebonded on human premolar teeth and were tested for shear bond strength, slot dimensions and bracket base appearance.
Results: Significant differences in the shear bond strength and slot dimensions were seen between the control and the experimental groups.
Conclusion: This study suggests sandblasting as the simplest, most efficient manner of immediately recycling debonded brackets.
Keywords:In-office reconditioning, Morphology of bases, Shear bond strength, Slot dimensions.
How to Cite:
Bansal N, Valiathan A, Bansal K. The Effects of Various In-Office Reconditioning Methods on Shear Bond Strength, Morphology of Slots and Bases of Stainless Brackets: An in vitro Study. J Ind Orthod Soc 2011;45(4):175-182.

 
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10.  Clinical Innovations
Insta-Head: An Instant Headgear Tube
Rajesh B Kuril, Shrikant S Chitko, Amit B Nehete
[Year:2011] [Month:October-December] [Volume:45 ] [Number:4] [Pages:53] [Pages No:205-206]
Full Text PDF | Abstract | DOI : 10.5005/jp-journals-10021-1037 | FREE

ABSTRACT
Specialized headgear tubes are required for fabrication of appliances, such as activator-headgear and twin-block with headgear. The common problems with these tubes are that they need to be purchased beforehand and they are expensive. The present article describes the chairside fabrication of a simple, inexpensive headgear tube (insta-head) without the need of any specialized armamentarium.
Keywords:Activator-headgear tube, Skeletal Class II, Skeletal Class III.
How to Cite:
Kuril RB, Chitko SS, Nehete AB. Insta-Head: An Instant Headgear Tube. J Ind Orthod Soc 2011;45(4):205-206.

 
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11.  Editorial
Editorial
Gurkeerat Singh
[Year:2011] [Month:October-December] [Volume:45 ] [Number:4] [Pages:53] [Pages No:v]
Full Text PDF | FREE

 
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