Evaluation of Canine Retraction Using Double Slot Vs. Single Slot Orthodontic Brackets; CBCT Study (original) (raw)
Related papers
2021
The objective of this study is to compare the rate of canine retraction between conventional labial retraction force versus palatal retraction force with labial appliance. Subjects and methods This prospective randomized clinical study was conducted on a sample of 26 patients recommended for upper first premolar extraction as part of their orthodontic treatment plan. The patient ages ranged from (16-26) years. Patients were randomly divided into two groups; Group I: Thirteen patients, treated with Roth brackets 0.022-inch slot for labial orthodontic appliance with palatal retraction force. Group II: Thirteen patients, treated with Roth brackets 0.022-inch slot for labial orthodontic appliance with labial retraction force. Results The canine retraction rate was measured clinically using dental vernier at monthly intervals. The distance measured was between maxillary canine cusp tip and maxillary first molar mesiobuccal cusp tip. Measurement was done till closure of the extraction spa...
Journal of Indian Orthodontic Society
Introduction: The objective of the study was to assess the rate of canine retraction and secondary outcomes associated with conventional fixed orthodontic treatment (CFO) and CFO with micro-osteoperforation (CFO + MOP), that is, anchorage loss, root resorption, vitality of tooth, pain and discomfort level during the procedure. Methods: A total of 16 patients with Class II Division 1 malocclusion who required upper first premolar extraction with lower non-extraction/single incisor extraction were divided into the test group (MOP) and positive control group (CFO + MOP) for a split-mouth study. Both maxillary canines were retracted with nickel–titanium (NiTi) closed coil springs. Patients were reviewed after 24 hours, 7 days, 28 days, and 4, 8, and 16 weeks to assess the rate of tooth movement, anchorage loss, root resorption, vitality of tooth, pain and discomfort level. Results: There was a statistically significant difference in the rate of tooth movement between the CFO and CFO + M...
Background: This in vitro study aimed to evaluate the effect of brackets' materials on the distance moved by canine and rotation during sliding. Materials and methods: Extracted human maxillary canine tooth was used as facsimile to fabricate forty acrylic canine teeth with special mold. These teeth were bonded with 0.018 × 0.030-inch orthodontic brackets with different materials namely; stainless steel, titanium, ceramic and plastic one and impeded in wax in metal boxes. A 0.016 × 0.022 inch straight stainless steel archwire were ligated to the brackets with loose stainless-steel ligature wire. Sliding of canine along the archwire was performed using nickel-titanium closed coil spring after wax softening at 50ºC. The distance moved by canine and the amount of rotation were assessed and compared among bracket types using one-way ANOVA and Tukey's high significant difference tests. Results: Distance moved by canine was significantly more with stainless steel followed by titanium, plastic then ceramic one. On the other hand, canine rotated significantly more with ceramic brackets followed by plastic, titanium then stainless steel one. Conclusion: Canine moved more with stainless steel brackets with less rotation while it was just the opposite with ceramic brackets.
Egyptian Dental Journal, 2022
Background: In extraction cases, canine torque is of primary importance. Failure to maintain the root within the cancellous bone predisposes to root resorption and periodontal breakdown. Positive torque in the bracket or wire may prevent the proximity of the root and cortical bone as well as the subsequent side effects. Objective: The aim of this study was to evaluate the torque control provided by 0.022” Roth prescription brackets during canine retraction with sliding mechanics. Materials and methods: Twenty-one patients (19.2 ± 2.7 years) with various malocclusions involving canine retraction were included in the trial. Cone beam computer tomography was acquired before and six months after the start of canine retraction. The change in canine torque was calculated from the preand post-retraction 3-dimensional images. Torque was measured for maxillary and mandibular canines as the angle between the canine’s long axis and the mid-sagittal plane. The paired t-test was used to evaluate...
The Angle Orthodontist, 2019
Objectives: To investigate the canine retraction rate and anchorage loss during canine retraction using self-ligating (SL) brackets and conventional (CV) brackets. Differences between maxillary and mandibular rates were computed. Materials and Methods: Twenty-five subjects requiring four first premolar extractions were enrolled in this split-mouth, randomized clinical trial. Each patient had one upper canine and one lower canine bonded randomly with SL brackets and the other canines with CV brackets but never on the same side. NiTi retraction springs were used to retract canines (100 g force). Maxillary and mandibular superimpositions, using cephalometric 45° oblique radiographs at the beginning and at the end of canine retraction, were used to calculate the changes and rates during canine retraction. Paired t-tests were used to compare side and jaw effects. Results: The SL and CV brackets did not show differences related to monthly canine movement in the maxilla (0.71 mm and 0.72 m...
Effect of extraction technique on the rate of canine retraction: a split-mouth study
Egyptian Orthodontic Journal, 2019
The method of tooth extraction may affect amount of bone and thus may affect orthodontic tooth movement. Materials and Methods:This study is a split mouth clinical trial. A total of 14 female patients were enrolled in the study. Following the leveling and alignment stage, the patient was sent for extraction either with conventional forceps way for one side and the other side with the aid of the Piezotome. Results:The average rate of canine retraction for the four months of the study and the total amount of canine retraction weren't significant. Regarding marginal bone loss,in control side (forceps extraction side) mean marginal bone loss was found to be 0.07 mm (+_ 0.1). In the piezotome side mean marginal bone loss was found to be 5.8 mm (0.23).The difference between two sides was statistically significant (p<0.05). Conclusions:The method of teeth extraction didn't affect the rate of canine retraction into the extraction socket. Piezotome was believed to produce more atraumatic extraction, however the amount of marginal bone loss was significantly greater compared to the conventional forceps extraction method.
Bulletin of the National Research Centre
Background Extraction of the first premolar followed by canine retraction into the extraction space is a common treatment in orthodontics. Molar rotation occurs when they are used as anchorage units for the canine distalization. The aim of this single-arm clinical trial was to evaluate the maxillary first molar rotation during maxillary canine retraction with elastic power chains and direct miniscrew anchorage. Results The mean difference between pre-retraction and post-retraction molar rotation was 1.89° ± 0.6 which was statistically insignificant. Conclusion The use of miniscrews for direct anchorage can eliminate unwanted rotation of the maxillary first molars during canine retraction. Trial registration ClinicalTrials.gov, NCT04887974. Registered on May 6, 2021- Retrospectively registered https://clinicaltrials.gov/ct2/show/NCT04887974?id=NCT04887974&draw=2&rank=1.
The journal of contemporary dental practice, 2016
Introduction: The results of previous studies about the efficacy of using self-ligating brackets (SLBs) in controlling canine movement during retraction are not in harmony. Therefore, the current study aimed to compare the effects of using new passive SLBs on maxillary canine retraction with sliding mechanics vs conventional ligating brackets (CLBs) tied with metal ligatures. Materials and methods: The sample comprised 15 adult patients (4 males, 11 females; 18-24 years) requiring bilateral extraction of maxillary first premolars. Units of randomization are the left or right maxillary canines within the same patient. The two maxillary canines in each patient were randomly assigned to one of the two groups in a simple split-mouth design. The canines in the SLBs group (n = 15) were bracketed with SLBs (Damon Q™), while the canines in the CLBs group (n = 15) were bracketed with conventional brackets (Mini Master Series). Transpalatal bars were used for anchorage. After leveling and alignment, 0.019 × 0.025˝ stainless steel working archwires were placed. Canines were retracted using a nickel-titanium close-coil springs with a 150 gm force. The amount and rate of maxillary canine retraction, canine rotation, and loss of anchorage were measured on study models collected at the beginning of canine retraction (T0) and 12 weeks later (T1). Differences were analyzed using paired-samples t-tests. Results: The effect differences were statistically significant (p < 0.001). Using Damon Q™ SLBs, the amount and rate of canine retraction were greater, while canine rotation and anchorage loss were less. Conclusion: From a clinical perspective, extraction space closure can be accomplished more effectively using SLBs.
International Journal of Research in Pharmaceutical Sciences
Canine, being the cornerstone of the dental arches, shares an important role in oral functions, esthetics, arch shape and stability. With the new bracket systems that have come to light, which have reduced friction, there is not much literature on how much of a rotation control they have on the cuspids. Hence this study is conducted to compare the efficiency of two least frictional resistance offering brackets – Self-ligating and synergy brackets in terms of rotational control. The study was designed as a prospective randomized controlled split-mouth clinical trial, which included 16 subjects of ages 12-30 years, divided into two groups, left, and the right quadrants receiving Self Ligating and Synergy brackets based on simple randomization, along with a 19*25" SS wire and closed coil springs for individual canine retraction. The patients were reviewed every 21 days for four appointments, and records were taken for each review. Photographs were taken of the cast at every review...