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1.  Clinical Innovations
Simplified Method of Bonding the Fixed Retainer
PS Vijayalakshmi, AS Veereshi, Mukesh Kumar
[Year:2011] [Month:October-December (Supplement)] [Volume:45 ] [Number:4] [Pages:60] [Pages No:260-261]
Full Text PDF | Abstract | DOI : 10.5005/jp-journals-10021-1047 | FREE

ABSTRACT

One of the means of maintaining stability has been the use of fixed retainers. Stainless steel multistranded wire is one of the most commonly used fixed retainer. The most critical or difficult step in using multistranded wire as a fixed retainer has been stabilizing the wire in its adapted position during bonding. This article will describe a very simple and effective method of stabilizing the multistranded wire retainer during bonding using Modeling Wax.

Clinical relevance: The method of stabilizing the fixed retainer described in this article during bonding using modeling wax, is the most simplest, economical, least time consuming and also very effective method.

Objective: To describe a very simple and effective method of stabilizing the fixed retainer using modeling wax during bonding.

Keywords: Retention, Coaxial wire, Modeling wax.

How to Cite: Vijayalakshmi PS, Veereshi AS, Kumar M. Simplified Method of Bonding the Fixed Retainer. J Ind Orthod Soc 2011;45(4):260-261.

 
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2.  Clinical Innovations
An Efficient Method of Open Coil Spring Insertion
Litesh Singla, Divya Singla
[Year:2011] [Month:October-December (Supplement)] [Volume:45 ] [Number:4] [Pages:60] [Pages No:265-266]
Full Text PDF | Abstract | DOI : 10.5005/jp-journals-10021-1049 | FREE

ABSTRACT

Open coil springs are often used in the orthodontic practice to open spaces to accommodate certain teeth. Insertion of open coil springs can be tricky and may require assistance. An easy and efficient method of open coil spring insertion is presented which can be routinely used and requires no additional armamentarium.

Keywords: Ligation, Open coil spring.

How to Cite: Singla L, Singla D. An Efficient Method of Open Coil Spring Insertion. J Ind Orthod Soc 2011;45(4):265-266.

 
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3.  Case Report
Simultaneous Intrusion and Retraction in Begg Appliance and Evaluation of Same by Non-numerical Approach by Esthetic Analysis
Mrunal Aley
[Year:2011] [Month:October-December (Supplement)] [Volume:45 ] [Number:4] [Pages:60] [Pages No:256-259]
Full Text PDF | Abstract | DOI : 10.5005/jp-journals-10021-1046 | FREE

ABSTRACT

Many appliances, labial and lingual have emerged with different mechanics for simultaneous intrusion and retraction. Nowadays, the temporary anchorage devices are advocated as a method of augmenting anchorage. The present case utilizes the conventional technique of archwire modification according to Hocevar in Begg's technique for true incisor intrusion and simultaneous retraction. A non-numeric approach analysis called esthetic analysis is used for lower third of face to evaluate the treatment results.

Keywords: Transpalatal arch (TPA), Aesthetic analysis (AA), Intrusion and retraction (IR).

How to Cite: Aley M. Simultaneous Intrusion and Retraction in Begg Appliance and Evaluation of Same by Non-numerical Approach by Esthetic Analysis. J Ind Orthod Soc 2011;45(4):256-259.

 
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4.  Original Articles
NiTi Expansion in Operated Unilateral Cleft Palate Patients
KY Poornima
[Year:2011] [Month:October-December (Supplement)] [Volume:45 ] [Number:4] [Pages:60] [Pages No:224-231]
Full Text PDF | Abstract | DOI : 10.5005/jp-journals-10021-1041 | FREE

ABSTRACT

Objective:To evaluate the efficacy of nickel-titanium expander for maxillary expansion and the skeletal and dental changes associated with the expander in operated cleft palate patients.

Materials and methods: Ten male unilateral cleft lip and palate patients in the age group of 9 to 13 years with transverse maxillary deficiency and with no history of bone grafting procedure, were selected from the patients visiting the combined cleft lip and palate clinic/orthodontic clinic.

Results: Orthopedic expansion of maxillary segments ranged from 2 to 5 mm, constituted 25% of total expansion. Maxillary Intermolar width measured at cuspal tips and palatal gingival margins (T-16, 26 and G-16, 26) increased by a mean of 8.6 mm (p < 0 .001) and 5.4 mm (p < 0 .001). Maxillary Inter premolar width measured at cuspal tips and palatal gingival margins (T-14, 24 and G-14, 24) increased by a mean of 5.6 mm (p < 0.001) and 4.7 mm (p < 0 .001). Maxillary intercanine width measured at cuspal tips and palatal gingival margins (T-13, 23 and G-13, 23) increased by a mean of 4.3 mm (p < 0.01) and 3.38 mm (p < 0.01). Postexpansion changes measured on the mandibular dental casts showed insignificant changes except in the intermolar area. Mandibular intermolar width measured at cuspal tips and lingual gingival margins (T-36, 46 and G-36, 46) increased by a mean of 0.6 mm (p < 0.05). The dental expansion constituted for 75% total expansion. Mandibular, occlusal plane angles increased by 2 to 3° resulting in increased TAFH.

Conclusion: NiTi expansion in operated cleft patients, showed mainly orthodontic expansion. The significant change in the maxillary intermolar region is due to the direct placement of NiTi palatal expander to 16, 26.

Keywords: Cleft lip and palate, Maxillary expansion, Nickel-titanium palatal expander.

How to Cite: Poornima KY. NiTi Expansion in Operated Unilateral Cleft Palate Patients. J Ind Orthod Soc 2011;45(4):224-231.

 
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5.  Original Articles
Position and Orientation of Hyoid Bone in Class II Division 1 Subjects: A Cephalometric Study
Rohit Khanna, Tripti Tikku, VP Sharma
[Year:2011] [Month:October-December (Supplement)] [Volume:45 ] [Number:4] [Pages:60] [Pages No:212-218]
Full Text PDF | Abstract | DOI : 10.5005/jp-journals-10021-1039 | FREE

ABSTRACT

Objective:The present study was undertaken to compare the pharyngeal dimensions in Angle’s Class I normal and Angle’s Class II division 1 samples, and to correlate it with the dentoskeletal parameters in both the groups.

Materials and Methods: The sample consists of 92 pretreatment lateral cephalogram, which were categorized into two groups, Group A and Group B, that they should present Angle’s Class I and Angle’s Class II molar relationship. Each group consists of 25 males and 21 females. Descriptive statistics for 14 variables were calculated. Results obtained from this study imply that Angle’s Class II Division 1 samples with retrognathic mandible showed an inferoposterior displacement of hyoid bone.

Results: The positional alteration of hyoid was prevalent in skeletal malrelationship rather than dentoalveolar malocclusion. The anteroposterior dimension of pharynx at hyoid level was more in males than in females, and it was relatively less in Angle’s Class II Division 1 samples to Class I samples. No significant sexual dimorphism exists in angular measurements of hyoid positioning.

Keywords: Hyoid bone, Dentofacial Pattern, Facial morphology, Pharyngeal dimension.

How to Cite: Khanna R, Tikku T, Sharma VP. Position and Orientation of Hyoid Bone in Class II Division 1 Subjects: A Cephalometric Study. J Ind Orthod Soc 2011;45(4):212-218.

 
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6.  Original Articles
Quantitative Assessment of Serum Nickel and Chromium Levels in Orthodontic Patients: An in vitro Study
Rohan Rai, V Surendra Shetty, Rajiv Ahluwalia, Sujitha George
[Year:2011] [Month:October-December (Supplement)] [Volume:45 ] [Number:4] [Pages:60] [Pages No:251-255]
Full Text PDF | Abstract | DOI : 10.5005/jp-journals-10021-1045 | FREE

ABSTRACT

Objective: The aim of this study was to analyze quantitatively the serum fluid levels of nickel and chromium in orthodontically treated patients due to biodegradation of the appliance over a period of time using an inductively coupled plasma emission spectrometry (ICP).

Materials and methods: This cross-sectional study included 24 patients undergoing Begg’s fixed appliance mechanotherapy between the age group of 12 to 18 years, with 12 males and 12 females consuming mixed diet. Six nonorthodontically treated individual were considered as controls. The experimental group consisted of patients wearing the appliance from 6 months, 12 months, 18 months and 24 months; with each group consisting of 6 samples: Three males and three females.

Results: Results obtained indicated that although nickel level in the serum was significant initially in the samples when compared to the controls, there was a gradual decrease of serum nickel level when the appliance was present for a longer duration. However, serum chromium levels showed no significant changes with time.

Keywords: Inductively coupled plasma emission spectrometry (ICP), Trace elements, Nickel and chromium levels.

How to Cite: Rai R, Shetty VS, Ahluwalia R, George S. Quantitative Assessment of Serum Nickel and Chromium Levels in Orthodontic Patients: An in vitro Study. J Ind Orthod Soc 2011;45(4):251-255.

 
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7.  Original Articles
Effect of Fluoride Prophylactic Agents on the Mechanical Properties of Nickel-Titanium Wires: An in vitro Study
SR Harish Koushik, Nikhilanand Hegde, Vinay Reddy, CM Mahesh, BS Chandrashekar, Balamohan Shetty, S Mahendra
[Year:2011] [Month:October-December (Supplement)] [Volume:45 ] [Number:4] [Pages:60] [Pages No:237-242]
Full Text PDF | Abstract | DOI : 10.5005/jp-journals-10021-1043 | FREE

ABSTRACT

Titanium-based alloys have high corrosion resistance because they form a thin, stable oxide layer. Nevertheless, fluoride prophylactic agents can cause corrosion and associated discoloration of titanium-based orthodontic wires.

Objective:The purpose of this investigation was to study the effects of fluoride prophylactic agents on the mechanical properties of nickeltitanium (NiTi) and copper-nickel-titanium (Cu-NiTi) orthodontic archwires.

Materials and methods: Preformed rectangular NiTi and Cu-NiTi wires were immersed in either an acidulated fluoride agent, a neutral fluoride agent, or distilled water (control) for 1.5 hours at 37°C. After immersion, the loading and unloading elastic modulus and yield strength of the wires were measured with a 3-point bend test in a water bath at 37°C, in accordance with the criteria in the current American National Standard/ American Dental Association Specification No. 32 for Orthodontic Wires (2000). Scanning electron microscopy was also used to characterize the effects of the fluoride treatment on the wire topography.

Results:The results showed that unloading mechanical properties of both the NiTi orthodontic wires were significantly decreased after exposure to both fluoride agents [one-way analysis of variance (ANOVA) and Dunnett’s post-hoc, a = 0.05]; corrosive changes in surface topography were observed for both wires, with Phos-Flur gel creating more detrimental effects.

Conclusion: The results suggest that using topical fluoride agents with NiTi wire could decrease the functional unloading mechanical properties of the wire and contribute to prolonged orthodontic treatment.

Keywords: Corrosion, NiTi, Fluorides, Modulus of elasticity, Yield strength, Instron.

How to Cite: Koushik SRH, Hegde N, Mahesh CM, Chandrashekar BS, Shetty B, Mahendra S. Effect of Fluoride Prophylactic Agents on the Mechanical Properties of Nickel-Titanium Wires: An in vitro Study. J Ind Orthod Soc 2011;45(4):237-242.

 
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8.  Clinical Innovations
Simplified Model Surgery Technique for Segmental Maxillary Surgeries
Namit Nagar, Bhavesh Kothari, Kamlesh Kumar Garg
[Year:2011] [Month:October-December (Supplement)] [Volume:45 ] [Number:4] [Pages:60] [Pages No:262-264]
Full Text PDF | Abstract | DOI : 10.5005/jp-journals-10021-1048 | FREE

ABSTRACT

Model surgery is the dental cast version of cephalometric prediction of surgical results. Patients having vertical maxillary excess with prognathism invariably require Lefort I osteotomy with maxillary segmentation and maxillary first premolar extractions during surgery. Traditionally, model surgeries in these cases have been done by sawing the model through the first premolar interproximal area and removing that segment. This clinical innovation employed the use of X-ray film strips as separators in maxillary first premolar interproximal area. The method advocated is a time-saving procedure where no special clinical or laboratory tools, such as plaster saw (with accompanying plaster dust), were required and reusable separators were made from old and discarded X-ray films.

Keywords: Lefort I osteotomy, X-ray film strips, Separators.

How to Cite: Nagar N, Kothari B, Garg KK. Simplified Model Surgery Technique for Segmental Maxillary Surgeries. J Ind Orthod Soc 2011;45(4):262-264.

 
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9.  Original Articles
Efficacy of Nickel-Titanium Palatal Expanders
Rahul Paul, Tapasya Juneja Kapoor, Varun Malhotra, US Krishna Nayak, Shruti Bhatt
[Year:2011] [Month:October-December (Supplement)] [Volume:45 ] [Number:4] [Pages:60] [Pages No:243-250]
Full Text PDF | Abstract | DOI : 10.5005/jp-journals-10021-1044 | FREE

ABSTRACT

Objective: Timely treatment of narrow maxilla by means of maxillary expansion during the primary or transitional dentition is recommended to reestablish optimal function in order to normalize dental, skeletal and neuromuscular growth. The aim of this study was to assess the amount of orthodontic and orthopedic expansion achieved in the maxilla and to evaluate cephalometrically the various postural changes in the maxilla and mandible with the use of nickel-titanium palatal expander.

Materials and methods: A total of ten subjects, five males and five females were selected from a survey conducted on 2000 children in age range of 7 to 15 years, belonging to various schools. Their study cast, cephalograms and occlusal radiographs were used for the study. Maxillary intermolar width, maxillary intercanine width and mandibular intermolar width were measured on study cast using Vernier caliper. Certain measurements were done on the cephalogram and occlusal radiograph.
The data obtained out of various measurements made on study casts, frontal, lateral cephalograms and occlusal radiographs at the pretreatment, postexpansion and postretention stages were statistically analyzed. All the observations were made by two observers. The interexaminer variability was calculated using t-test. The mean and standard deviations were calculated and student's t-test (paired) was applied to determine the amount of change, variability of change and significance of change, respectively.

Results: A constant force exerted by nickel-titanium palatal expander had orthopedic effects in growing age group indicated by statistically increase in the maxillary width. The ratio of relative orthodontic to orthopedic effect with this appliance was 6:1. Consequent to maxillary expansion, there occurred a significant downward movement of the maxillae and downward and backward rotation of the mandible. There was opening of midpalatal suture during active phase followed by suture remineralization during the retention period.

Conclusion: To conclude, a Ni-Ti expander brings about expansion by a combination of orthodontic and orthopedic effects by an increase in maxillary intermolar, maxillary intercanine and mandibular intercanine widths as also the opening of the midpalatal suture.

Keywords: Nickel-titanium expander, Maxillary expansions, Maxillary width.

How to Cite: Paul R, Kapoor TJ, Malhotra V, Nayak USK, Bhatt S. Efficacy of Nickel-Titanium Palatal Expanders. J Ind Orthod Soc 2011;45(4):243-250.

 
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10.  Original Articles
Relation of Pharynx with Orofacial Structures in Jaipur (India) Population Exhibiting Normal Occlusion with Respect to Sex: A Cross-sectional Study
Vijay Agarwal, Y Giridhar Reddy, Sandhya Jain, Vinod Goyal, Tina Chugh
[Year:2011] [Month:October-December (Supplement)] [Volume:45 ] [Number:4] [Pages:60] [Pages No:207-211]
Full Text PDF | Abstract | DOI : 10.5005/jp-journals-10021-1038 | FREE

ABSTRACT

Objective: To investigate the relation of pharynx with orofacial structures in Jaipur (India) population exhibiting normal occlusion with respect to sex.

Materials and Methods: The relation of pharynx with orofacial structures was examined on the lateral cephalometric head films of 180 subjects, 90 males and 90 females. The age groups of the subjects were between 15 to 25 years. The effect of sex on the pharyngeal parameters was analyzed by means of variance analysis (ANOVA).

Results and Conclusion: It was observed that five measurements Ba-PNS, apw2-ppw2, t-ppw, hy-apw2 and Ho perp. to ANS-PNS plane were different for males and females.

Keywords: Pharynx, Orofacial structures, Cephalogram.

How to Cite: Agarwal V, Reddy YG, Jain S, Goyal V, Chugh T. Relation of Pharynx with Orofacial Structures in Jaipur (India) Population Exhibiting Normal Occlusion with Respect to Sex: A Cross-sectional Study. J Ind Orthod Soc 2011;45(4):207-211.

 
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11.  Original Articles
Dentoskeletal and Soft Tissue Profile Changes Associated with Mandibular Setback Osteotomy: A Cephalometric Study
Manish Goyal, Akshay Shetty, Rajesh Reddy, Ramanna Reddy, Mukesh Kumar
[Year:2011] [Month:October-December (Supplement)] [Volume:45 ] [Number:4] [Pages:60] [Pages No:232-236]
Full Text PDF | Abstract | DOI : 10.5005/jp-journals-10021-1042 | FREE

ABSTRACT

The aims of the present cephalometric study1 were (1) to describe the interrelationships of the soft tissue and dentoskeletal profiles following total mandibular setback osteotomies and (2) to detect whether there were cephalometric variables that could contribute to an accurate prediction of the surgical effect on the soft tissue profile. Pretreatment, presurgical and postsurgical lateral cephalograms of eight adult patients who had been treated successfully by preadjusted edgewise appliance for presurgical decompensation were obtained. Bilateral sagittal split osteotomy for mandibular setback procedure was carried out under the supervision of a single surgeon.
The conclusions indicated that the facial concavity, in regard to the relationship of the hard and soft tissue chin to the upper face, was decreased by this surgical procedure; facial esthetics was improved. The mandible assumed a more normal relationship to the upper denture base. The least amount of change of the soft tissue profile was exhibited by the upper lip and maxillary sulcus of the upper lip. The greatest amount of change of the soft tissue profile was exhibited by the lower lip, the mandibular sulcus of the lower lip and the soft tissue chin.

Keywords: Mandibular prognathism, Maxillary advancement, Dentoosseous, Mandibular setback osteotomies, Cephalometric variables, Cephalograms, Bilateral sagittal split osteotomy.

How to Cite: Goyal M, Shetty A, Reddy R, Reddy R, Kumar M. Dentoskeletal and Soft Tissue Profile Changes Associated with Mandibular Setback Osteotomy: A Cephalometric Study. J Ind Orthod Soc 2011;45(4):232-236.

 
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12.  Original Articles
Immediate and Long-term Changes in the Pharyngeal Airway Passage following Maxillary Advancement with Distraction Osteogenesis in Adult Patients with Cleft Lip and Palate
Ashok Kumar Jena, Vidya Rattan, Satinder Pal Singh, Ashok Utreja
[Year:2011] [Month:October-December (Supplement)] [Volume:45 ] [Number:4] [Pages:60] [Pages No:219-223]
Full Text PDF | Abstract | DOI : 10.5005/jp-journals-10021-1040 | FREE

ABSTRACT

Objective:To evaluate the immediate and long-term effects of maxillary distraction osteogenesis on the pharyngeal airway passage and soft palate adaptation in adult patients with cleft lip and palate.

Design: A total of 12 North Indian adult patients in the age range of 17 to 34 years with cleft lip and palate underwent advancement of maxilla by distraction osteogenesis. Lateral cephalograms recorded prior to distraction, at the end of distraction, 6 months after distraction and at least 24 months (mean 25.5 ± 1.94 months) after distraction osteogenesis were used for the evaluation of immediate and long-term effects of maxillary distraction on the pharyngeal airway passage and adaptation of soft palate. Descriptive statistics, ANOVA and post-hoc test were used, and probability value (p-value) 0.05 was considered as statistically significant level.

Results: Maxillary distraction improved the depth of nasopharynx. The depth of oropharynx was increased significantly (p < 0.05) after immediate maxillary advancement; but at the end of 6 months and after 2 years of follow-up, the improvements were not significant. The length of soft palate was increased after immediate and long-term follow-up of maxillary distraction. The inclination of the soft palate was increased significantly (p < 0.01) after immediate advancement of maxilla and was remained stable till the end of 2 years postdistraction.

Conclusion: The advancement of the maxilla by distraction osteogenesis improved the pharyngeal airway passage in adult subjects of cleft lip and palate.

Keywords: Pharyngeal airway, Distraction osteogenesis, Cleft lip, Cleft palate.

How to Cite: Jena AK, Rattan V, Singh SP, Utreja A. Immediate and Long-term Changes in the Pharyngeal Airway Passage following Maxillary Advancement with Distraction Osteogenesis in Adult Patients with Cleft Lip and Palate. J Ind Orthod Soc 2011;45(4):219-223.

 
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13.  Editorial
Editorial
Gurkeerat Singh
[Year:2011] [Month:October-December (Supplement)] [Volume:45 ] [Number:4] [Pages:60] [Pages No:iv]
Full Text PDF | FREE

 
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