Perrotta, Stefania
(2021)
"Canine first technique" in maxillary impacted canines:
analysis of the treatment duration and the success of therapy.
[Tesi di dottorato]
| Item Type: |
Tesi di dottorato
|
| Resource language: |
English |
| Title: |
"Canine first technique" in maxillary impacted canines:
analysis of the treatment duration and the success of therapy. |
| Creators: |
| Creators | Email |
|---|
| Perrotta, Stefania | perrottastefania@gmail.com |
|
| Date: |
2021 |
| Number of Pages: |
45 |
| Institution: |
Università degli Studi di Napoli Federico II |
| Department: |
Neuroscienze e Scienze Riproduttive ed Odontostomatologiche |
| Dottorato: |
Medicina clinica e sperimentale |
| Ciclo di dottorato: |
33 |
| Coordinatore del Corso di dottorato: |
| nome | email |
|---|
| Beguinot, Francesco | francesco.beguinot@unina.it |
|
| Tutor: |
| nome | email |
|---|
| Valletta, Rosa | UNSPECIFIED |
|
| Date: |
2021 |
| Number of Pages: |
45 |
| Keywords: |
impacted canine, maxillary canine impaction, canine first technique, canine displacement, skeletal anchorage |
| Settori scientifico-disciplinari del MIUR: |
Area 06 - Scienze mediche > MED/28 - Malattie odontostomatologiche
Area 06 - Scienze mediche > MED/29 - Chirurgia maxillofacciale |
[error in script]
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| Date Deposited: |
20 Apr 2021 07:04 |
| Last Modified: |
07 Jun 2023 10:21 |
| URI: |
http://www.fedoa.unina.it/id/eprint/14066 |
Collection description
Background: The "canine first technique" consists in the innovative
surgical-orthodontic approach for the impacted canine before starting the fixed-orthodontic treatment. The procedure is a united surgical-orthodontic treatment that provide the eruption of the impacted canine moving first of all the crown of impacted canine away from the roots of incisors with cantilever
and skeletal anchorage.The primary objective of the study is to analyze the eruption time of the maxillary impacted canines treated by «Canine First» technique and to evaluate the success rate. It has been investigated the possibility that certain clinical and radiographic variables of our interest may influence the results achieved.
Methods: 103 patients, for a total of 131 impacted canines were treated. Alpha angle, sectors of Erickson&Kurol and the age have been studied to assess the difficulty of canine eruption. All the canines have been dealt with through the approach "canine first". The variables of interest were analyzed using descriptive statistics.
The median follow-up time was evaluated using Kaplan Meier's inverse procedure.
The primary outcome (canine eruption time) was analyzed using the Kaplan-Meier curves.
The curve comparison between the different known risk factors was made using the test log-rank.
The median eruption time (95% CI) was calculated for each result. The statistical analysis was conducted by the statistical software R-3.6.0.
Results: The 58.2% of subjects were women, in the 51% of cases were people younger than 16 y.o.In the 66.4% the canine was placed palatally and positioned in the Sector 3 (30.16%). The median alpha angle was 38.7°. In the 88.9% of cases, we had the eruption of the canines, median time of eruption was 4.2months. We found a statistically significant difference in alpha angle >/< 22° able to influence the eruption time. For sectors and age, we have not found a statistically significant difference in eruption time
Conclusion: the current results show that the canine first technique is effective for the eruption of impacted canine and that the alpha angle <22°can be considered a favourable prognostic factor.
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