Updating the orthodontic envelope of discrepancy: Canines transposition

Orthod Craniofacial Res

Yalda

et al. 2023

Background and ObjectivesThe intrusion of anterior teeth is a routine procedure in orthodontics, which has been performed efficiently with the help of mini‐screws in the anterior region, especially the upper maxilla. This study aimed to investigate the effect of insertion angle and sociodemographic features on the success rate of mini‐screws at the anterior maxillary region.Materials and MethodsTwenty‐nine patients (18 Females and 11 Males) aged 18‐40 years old were involved in the current study. A split‐mouth design was carried out in which recruited patients needed bilateral anterior screws at the labial bone in the region of the incisor for the intrusion of upper anterior incisor teeth as part of their orthodontic treatment with a fixed appliance (upper right side received 90‐degree insertion angle mini‐screw and 45° for left side) using a surgical guide fabricated from patients CBCT and intraoral scans. The mini‐screws were inserted at the attached gingiva bilaterally to achieve intrusion of upper anterior teeth with a power chain ligated from the main archwire to the anterior min‐implants. The patient was recalled monthly for orthodontic appliance activation and screw assessment for 6 months. The intrusion force was 15 g on each side.ResultsThe results of the study showed that screw stability was higher in the male group than the female group at the 6th monthly follow‐up visit with a statistically significant difference between both genders (P = .044). Concerning insertion angle, results showed a statistically significant difference between 45° and 90° as an insertion angle with a P‐value <.01 in most of the follow‐up months.ConclusionThis study found that male patients with mini‐screws inserted at 90° showed greater screw stability over time.

Section: Ta B L Esupporting

confidence: 46%

Section: Discussionmentioning

confidence: 38%

The success rate of mini‐screws for incisors intrusion and patient age, gender, and insertion angle in the maxilla using CBCT and implant‐guided surgery. A split‐mouth, randomized control trail

Chawshli

Orthod Craniofacial Res

Yalda

et al. 2023

“…That helped the clinician to make the mechanics and the treatment much simpler, but the ability of the wire to guard the movement and preserve the arch shape was greatly affected. [ 12 13 ]…”

Section: Discussionmentioning

confidence: 99%

The MH-WIRE, a novel coil-springe wire system: A prototype design

Elkolaly²

2022

J Orthodont Sci

Self Cite

OBJACTIVE: The authors introduced a novel wire system aiming to achieve optimal goals of tooth movement without multiple wire changes or sophisticated wire bending. MATERIALS AND METHODS: The system was composed of a single wire for all phases of treatment. The archwire was composed of NiTi coil springs connecting delta-shaped segments of 0.018˝ × 0.025˝ Titanium Molybdenum Alloy (TMA) segments to fit the 0.018˝ × 0.025˝ bracket slot, or 0.022˝ × 0.028˝ TMA segments to fit the 0.022˝ × 0.028˝ bracket slot. The coil spring was closed and packed in design. The coil-spring loops were constructed with 3 mm lumen. The wires were designed in three sagittal forms and the system provided nine forms of archwires. RESULTS: The wire systems have been an important component of treatment since the development of orthodontic science. Over time, the philosophy has evolved from endorsing wire bending to straight-wire treatment and then to custom-made archwires. CONCLUSION: This wire system was designed to be used as a “single-wire for the case” across all stages of treatment to achieve the ideal goals without any biological damage.

“…Losing the well-formed lateral incisor root leads to buccal impaction of the canines. Hence, one could understand why most of the buccally impacted canines were unilateral; that was because faults of the incisors were mostly unilateral, not bilateral [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

Factors That Guide the Diagnosis and Treatment Planning for Impacted Canines Using Three-Dimensional Cone-Beam Computed Tomography: A Cross-Sectional Study

International Journal of Dentistry

Elkolaly²,

Elmoazen

et al. 2022

Objective. Impacted canines are one of the significant challenges in orthodontics that should be appropriately assessed to provide the best treatment to the patients. Materials and Methods. In the present study, 57800 patients were examined over six years to investigate the prevalence, diagnostic procedures, and treatment methodologies for impacted canine cases. Prevalence and diagnosis were tested using history taking, clinical examination, and three-dimensional cone-beam radiographs. The cases were tested for impaction site, gender, age, signs, and symptoms. The groups were classified for impaction location according to Mupparapu’s classification. Result. The causative factors and the treatment methodology selected were plotted according to age and gender distribution. The total prevalence was 3.9% of canine impaction cases in relation to the total sample cases. The results showed a strong correlation between the site of impaction toward the upper arch and with distribution following Mupparapu’s classification. The pain was the most detectable complication in all age groups, while root resorption was the least. Conclusion. Most of the younger age groups were sent for exposure and orthodontic traction, while the mid-aged groups elected for observation, and follow-up as their primary concern was esthetics. However, the adult patients were into exposure and traction to improve their function.