Dipti Shastri

A newer simultaneous space creation, eruption, and adjacent root control spring for the management of impacted tooth.

Usually, treatment of impaction includes: Welcome preparation (to create space), surgical exposure and attachment to the impacted tooth and the orthodontic guidance for the eruption of the impacted tooth. Sometimes, due to deficiency of space, creation of space for impacted tooth requires first, and space regaining efforts may require the distal movement of posterior teeth and or mesial movement of anterior teeth in the arch, but it may create some problems. To overcome the unwanted problem in this clinical situation and to reduce overall treatment duration of the patient, we have developed the Simultaneous space creation, Eruption and Adjacent root control spring to control crown as well as root movement.

Alignment of palatally impacted canine with open window technique and modified K-9 spring

The patient was an 18-year-old female who had an Angle Class I malocclusion with a left palatally impacted maxillary canine. The orthodontic treatment of a palatally impacted canine is aimed at bringing the tooth into its correct position in the dental arch without causing any periodontal damage. To achieve this goal, a variety of surgical and orthodontic techniques have been proposed in relation to the position of the impacted tooth and there are various treatment methods used for traction. The duration of the traction was 3 months and alignment duration was 12 months the total treatment time was 15 months. In the following case, we presented that maxillary palatally impacted canine was brought into the arch with open window method for canine exposure and modified K-9 spring for traction, that is simple spring for orthodontic traction of the palatally impacted canines.

Bolton ratio in a North Indian population with different malocclusions.

Objective: The objective was to evaluate the Bolton ratio in a North Indian population in Lucknow with different malocclusion. Materials and Methods: Totally, 110 study cast [Age: Female (14.2 ± 1.5 years, Male (13.9 ± 2.3 years)] were taken from the patients undergoing orthodontic treatment and Subjects were divided into three groups: Group I (Angle′s Class I, n = 40), Group II (Angle′s Class II, n = 50) and Group III (Angle′s Class III, n = 20) according Angle′s classification of malocclusion. The mesiodistal widths of all maxillary and mandibular teeth from right first molar to left first molar were measured with a digital caliper to calculate the Bolton ratio. The readings were then used to compute the anterior and total Bolton ratios. ANOVA and Tukey′s test were used for the statistical analysis. Results: A mean total Bolton ratio of 91.36 ± 2.13 and a mean anterior Bolton ratio of 78.14 ± 4.09 were found for the sample, Significantly higher mean anterior tooth ratios were found for Group II (Angle′s Class II) patients (P < 0.01). All other ratios were within close range of Bolton′s norms. Conclusions: Angle′s Class II patients showed a tendency toward wider mesiodistal widths of teeth in the mandibular anterior region or smaller tooth sizes in the maxillary anterior region.

Cephalometric norms for the upper airway in a healthy North Indian population

Objective: The aim was to obtain normative data for cephalometric measurements of the upper airway in the North Indian population. Design: Observational study. Setting: University department and teaching hospital out-patient clinic. Subjects and Methods: A total of 180 healthy patients were included out of which 90 were males (age range, 8-16 years), and 90 were females (age range, 8-16 years), with normal skeletal facial profile, no history of snoring, sleep apnea, upper airway disease, tonsillectomy or adenoidectomy, obesity, or pathology in the pharynx. Twenty cephalometric airway measurements, including size of the tongue, soft palate, nasopharynx, oropharynx, hypopharynx, and relative position of the hyoid bone and valleculae were obtained. Landmarks on cephalometric radiographs were digitized and measurements were made using a specially designed computer program. Error analysis of measurements was performed and comparison of measurements according to sex was made. Results: Significant sex dimorphism was seen for the majority of measurements, with the exception of minimal depth of the airway, oropharyngeal depth of the airway, and the soft palate angle with the hard palate. Conclusion: A minimum sagittal dimension of the upper airway was evident despite differences in measurements between sexes. Findings from this study should be a useful reference for the assessment of sleep apnea in the North Indian population.

Correction of minor crowding using thermoformed appliance with selective trimming

Todays patients demand correction of malocclusion without any compromise in esthetics. Thermoformed appliances are good alternative to treat such cases. In this article, we will discuss the correction of minor crowding using thermoformed appliance with selective trimming.

Reciprocal force system for the movement of canine and molar: Technique clinic

Maxillary permanent canines are the basis of an esthetic smile and functional occlusion. There are so many factors that interfere with their normal development and eruption leading to ectopic eruption of canine. Sometimes, the mesial movement of molars also leads to ectopically erupted canine. Various inter- and intra-arch treatment mechanics have been used to direct the eruption of ectopically placed teeth. Here, we use a spring that exerts force in both mesial and distal direction as well as can upright the tooth.

An efficient semi-fixed bite raiser

Temporary bite opening in cases of deep bite and cross bite prevents mandibular and maxillary anterior brackets from being sheared off and allows unobstructed tooth movement. Both removable and fixed bite planes have their limitations. Here, we present a very simple and efficient method to fabricate temporary bite raiser.

Pharyngeal airway parameters in subjects with Class I malocclusion with different growth patterns

Objectives: (1) To test the null hypothesis that there are no significant difference in the pharyngeal airway in subjects with Class I malocclusion with different growth patterns. (2) To test the null hypothesis that there are no significant difference in dentofacial structure in subjects with Class I malocclusion with different growth patterns. Materials and Methods: Lateral cephalometric radiographs of 120 skeletally Class I were separated into three groups according to the SN-MP angle. Lateral cephalometric radiographs of 39 low angle, 45 high angle and 36 normal angle were examined. Group difference were analyzed with analysis of variance (ANOVA) and the Tukey test, at the P < 0.05 level. Results: For pharyngeal airway measurements statistically significant difference were found in pharyngeal airway length, and D5 (retroepiglottal) pharyngeal width. No statistically significant sagittal pharyngeal (D1-D5) parameters difference were determined between low angle and normal angle subjects. High angle subjects had lower sagittal pharyngeal D2 (retropalatal) and D5 (retroepiglottal) parameters than those with low and normal angle, additionally in high angle subjects had lower D1 (retropalatal) and D4 (retroglossal) parameters than those with normal angle subjects. According to ANOVA only 1 out of 9 dentofacial measurements showed not statistically significant difference among different growth patterns. Conclusion: The null hypothesis was rejected. Significant difference in pharyngeal airway measurements and dentofacial morphology of Class I subjects with different growth patterns were identified.

Ortho-prostho management of hypodontia using fibre-reinforced composite resin bridge: An interdisciplinary approach

Hypodontia is the congenital absence of <6 teeth because of agenesis. The absence of teeth may be unilateral or bilateral. Several treatment options are indicated to treat hypodontia, including the maintenance of primary teeth or space redistribution for restorative treatment with partial adhesive bridges, tooth transplantation, and implants. However, an interdisciplinary approach is the most important requirement for the ideal treatment of hypodontia. This case report describes the interdisciplinary treatment of a 17-year-old female with missing teeth (mandibular central and lateral incisors), deep overbite, and spacing. The treatment plan included the first orthodontic correction and prosthetic management using fiber-reinforced composite bridge for missing teeth. CLINICAL RELEVANCE TO INTERDISCIPLINARY DENTISTRY Correction of dental problems is a complex procedures and usually it requires a interdisiplinary approch for the best outcome. Interdisiplinary dentistry covers the broad area and involves management of patient records, diagnose the various problem, and establising the chain of communication.

Management of Impacted 2nd Premolar Impaction by Buccal Approach: A Case Report

This case report presents treatment of a distally impacted mandibular 2nd premolar having a 90° tilt to the long axis of the tooth. In this 16 year old girl radiological finding described that horizontally impacted mandibular second premolar was positioned below the roots of the mandibular first molar. Due to the abnormal position of impacted premolar, it was planned to be removed surgically. Finally, the horizontally impacted mandibular second premolar was extracted without any injury to the mental nerve.