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   Table of Contents - Current issue
Coverpage
October-December 2021
Volume 12 | Issue 4
Page Nos. 135-188

Online since Monday, December 27, 2021

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ORIGINAL ARTICLE  

Coefficient of regression to predict skeletal patterns for nongrowing subjects using gonial angle on orthopantomogram p. 135
Rohan Anil Garud, Kunal Raghavendra Shah, Nitin Dilip Gulve, Amit Balkrishna Nehete, Shivpriya Dattatraya Aher
DOI:10.4103/ijor.ijor_11_21  
Introduction: The gonial angle plays to be one of the significant indicators for the diagnosis of growth pattern of orthodontic patients. It is a known fact that lateral cephalograms are commonly used for the measurement of gonial angle, but panoramic radiographs (PRs) can display both the gonial angles simultaneously and as accurately as lateral cephalograms. The aim of this study is to develop an equation for the prediction of the skeletal pattern of nongrowing participants from gonial angle values on PR. Materials and Methods: PRs and lateral cephalograms of 75 orthodontic patients were selected. The gonial angle was measured on PR and Sella Nasion-mandibular plane (SN-MP) angle was measured on lateral cephalograms. The values obtained were analyzed using paired Pearson's correlation test and regression analysis was done. Results: The relationship between the gonial angle measurements obtained from each radiograph was represented as, “SN-MP angle (Skeletal pattern) = −44.297 + 0.6318 × Gonial angle (PR) in the linear function.” Conclusion: Hence, PR could be used to determine the gonial angle as accurately as a lateral cephalogram and a useful tool for examining the skeletal pattern of patients.
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CASE REPORTS Top

Updating the orthodontic envelope of discrepancy: Canines transposition p. 140
Hasan Sabah Hasan, Mohamed A Elkolaly
DOI:10.4103/ijor.ijor_24_21  
This study aimed to report a case of skeletal Class I adult with anterior open and transposed upper canines with premolars and lower right canine transposed with lateral incisor, retained upper deciduous C, B, and lower right C. With congenital missing upper right lateral incisor, upper spacing arch, and lower mild crowding arch, a patient complains about her smile esthetic. The case was treated using temporary anchorage devices and three-dimensional retraction loops designed primarily for upper canine transposition with an accepted esthetic reshaping of lower canine using composite restoration. The missing lateral had been implanted with smile makeover using microesthetic postorthodontic treatment. After 16 months of treatment, it was possible to see a significant improvement of the patient's facial profile, with overcorrection in overjet and preservation of the tissues and integrity of dental roots.
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Management of impacted maxillary canines during orthodontic treatment: Report of two cases with 1-year follow-ups p. 148
Dhaval P Pandya, Divya Maheshwari, Shatraj Shetty, Krupa R Shirvekar
DOI:10.4103/ijor.ijor_2_21  
The prevalence of impacted maxillary canines is 2%–3%. The position of the canine germ should be evaluated between 9 and 11 years of age group. In addition to the clinical examination, radiographic evaluation of the canine site will aid in gathering additional data such as the position of the canine, its relationship with the adjacent teeth, and any oral pathology associated with the site. It becomes imperative to have an early diagnosis of the ectopically positioned canine. Orthodontic considerations which include orthodontic traction for the malpositioned canine tooth along with surgical exposure assume significance, if the permanent canine is deviating from its normal eruption pathway trajectory within its specified timeline of erupting into the dental arch. The objective of reporting the following two cases is to analyze a successful 1-year follow-up outcome of an interdisciplinary, evidence-based approach in managing impacted canines in two female patients in their second decades of life.
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A novel spring for correction of ectopically positioned teeth p. 153
Achint Chachada, Nehal Saraf, Megha Jain, Piyush Khandelwal
DOI:10.4103/ijor.ijor_21_21  
A misaligned tooth can cause serious aesthetic and functional challenges. Customized springs are indeed a practical remedy for aligning such teeth. The skill to provide an ideal system of forces to reach the desired movement, as well as the management of potential side effects, is directly linked to a successful outcome. One such approach is shown in this case report.
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Anterior maxillary and mandibular subapical osteotomy for correction of bimaxillary protrusion p. 157
Nilesh Mote, Jyoti Rajbhar, Aditya Prakash Pawar, Anchin Goyal, Anuj Dadhich
DOI:10.4103/ijor.ijor_14_21  
Bimaxillary protrusion (BP) is one of the most prevalent dentofacial deformities in the Asian population. Facial esthetics is the primary concern of these patients. Typical orthodontic treatment includes retraction of maxillary and mandibular incisors after extraction of the four first premolars, but this might not yield desired esthetic changes in the patient. Thus, orthognathic surgery such as anterior subapical osteotomies and extraction of premolars can be looked upon as an option to correct sagittal excess of the jaw bones and associated dental anomalies. This case report describes the treatment of a middle-aged woman with complaints of lip protrusion and unfavorable esthetics due to present malocclusion with the help of anterior maxillary and mandibular osteotomy procedure which provides a stable and viable treatment option for desired esthetic results.
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Reverse-M-Zadake spring – A novel design for the management of root divergence p. 164
Sujit Navnath Zadake, Yatishkumar Joshi, Suresh Kangane, Anand Ambekar
DOI:10.4103/ijor.ijor_23_21  
The main reason to seek Orthodontic treatment is esthetics. Black triangles after lower incisor extraction are one of the commonly occurring malocclusion which causes esthetic compromises. Relapse is unavoidable while treating such cases. This relapse can be controlled only when there is translatory root movement in the mesial direction. Very little literature is available for the correction of black triangles. In this article, a spring is fabricated by using 0.018 A J Wilcock stainless steel special plus wire containing three helices. This Trihelical spring is a simple, effective, esthetic, and biologically compatible device with excellent root control for the treatment of root divergence.
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SHORT COMMUNICATIONS Top

The open bite checklist manifesto p. 167
Heba E Akl, Amira A Aboalnaga, Yehya A Mostafa
DOI:10.4103/ijor.ijor_28_21  
Background and Purpose: The vertical problems and specifically the anterior open bite (AOB) malocclusion represent a challenging situation whenever they are encountered by an orthodontist. The multiple intervening etiologies, the skeletal dysplasia involved, the functional and esthetic problems contribute to the difficulty of the situation. AOB is a descriptive term; underneath which lies a variety of antithesis status that depicts a similar overall appearance. An astute orthodontist should be able to look beyond the overall image to identify the etiological factor(s) that caused such malocclusion and consider the contributing components to apply the appropriate treatment modality. The aim of this paper is to study the interaction between the various components contributing to the AOB malocclusion. Methods: A subclassification has been proposed based on how these components present together differently (whether skeletal or dental open bites). A checklist of 10 questions has been formulated. The answers to these 10 questions in sequence were used through a specifically constructed diagnostic tree that should guide the orthodontist toward an accurate diagnosis. Results: The checklist and diagnostic tree were successfully applied on five patients, which is thought to facilitate their treatment planning. Conclusions: The detailed classification was useful in giving an idea on the clinical and cephalometric features of each patient. The checklist and the diagnostic tree helped to identify the exact offending factors for the presenting malocclusion. Accordingly, the most appropriate treatment option would be provided.
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Parametric sparse representation-Three dimensional recording for maxillo-mandibular malformations p. 186
Yatishkumar S Joshi, Azhar Mohammed, Anand S Ambekar
DOI:10.4103/ijor.ijor_20_21  
Complex malformations manifest in jaws which pose a challenge to diagnose the malocclusion for its management. A thorough three-dimensional assessment of the dentofacial skeleton is necessary to identify the underlying malocclusion. Although there are numerous methods to investigate the same, recording in a way to easily register, communicate and replicate is not much worked upon. This article tries to introduce a simple tool to record maxillamandibular malformations.
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