Timing of Therapeutic Extractions Can Affect En Masse Anterior Retraction: A Split Mouth Randomized Clinical Trial
Objective: To investigate the effect of deferred timing of therapeutic extraction on the rate of space closure during en masse anterior retraction. Methods: Twenty-six patients (aged 16-24 years) with bimaxillary protrusion, crowding <3 mm, requiring bilateral extraction of four first premolars...
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| Format: | Article |
| Language: | English |
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Galenos Yayinevi
2024-12-01
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| Series: | Turkish Journal of Orthodontics |
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| Online Access: | https://turkjorthod.org/articles/timing-of-therapeutic-extractions-can-affect-en-masse-anterior-retraction-a-split-mouth-randomized-clinical-trial/doi/TurkJOrthod.2024.2023.6 |
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| author | Devi Priya Shobha Sundareswaran Navnita Mishra SreehariSathyanathan Mohammed Shibin Baby Jisha |
| author_facet | Devi Priya Shobha Sundareswaran Navnita Mishra SreehariSathyanathan Mohammed Shibin Baby Jisha |
| author_sort | Devi Priya |
| collection | DOAJ |
| description | Objective: To investigate the effect of deferred timing of therapeutic extraction on the rate of space closure during en masse anterior retraction.
Methods: Twenty-six patients (aged 16-24 years) with bimaxillary protrusion, crowding <3 mm, requiring bilateral extraction of four first premolars were recruited. Permuted block randomization was done. Allocations were concealed in opaque envelopes which were numbered and sealed. Each patient’s right and left quadrant was randomly assigned for premolar extraction. The extraction of the contralateral side was deferred until the commencement of retraction. The primary outcome was the rate of space closure, and the secondary outcomes were anchorage loss and canine rotation. Blinding was applied only during the outcome assessment. The independent t-test and Intraclass correlation tests were used for statistical evaluation.
Results: Twenty-four patients completed the study. The mean rate of space closure over a period of 4 months was found to be significantly higher for the recently extracted site (0.818±0.208) when compared with healed site(0.426±0.184)(p<0.001). The tipping of the canine was also significantly higher for the former (6.042°±1.398°) than the latter (5.125°±1.035°) (p<0.05). However, the amounts of anchorage loss and canine rotation were insignificant. No adverse effects were noted.
Conclusion: The rate of space closure at the recent extraction site was faster than that at the healed site. There was no significant difference in the mesial movement of anchorage molars or rotation of canines into the extraction site. The tipping of canines was significantly greater in the recent extracted quadrant. The results of this trial indicate a clinical recommendation to initiate orthodontic retraction immediately following therapeutic extractions and offer a practical, non-invasive, safe procedure for increasing the rate of tooth movement. |
| format | Article |
| id | doaj-art-ab4d7023f96f4646b7c612ce7116e8ed |
| institution | Kabale University |
| issn | 2528-9659 2148-9505 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Galenos Yayinevi |
| record_format | Article |
| series | Turkish Journal of Orthodontics |
| spelling | doaj-art-ab4d7023f96f4646b7c612ce7116e8ed2025-01-07T10:19:10ZengGalenos YayineviTurkish Journal of Orthodontics2528-96592148-95052024-12-0137421322010.4274/TurkJOrthod.2024.2023.6Timing of Therapeutic Extractions Can Affect En Masse Anterior Retraction: A Split Mouth Randomized Clinical TrialDevi Priya0https://orcid.org/0000-0002-1778-5583Shobha Sundareswaran1https://orcid.org/0000-0001-9605-5871Navnita Mishra2https://orcid.org/0000-0002-6126-4486SreehariSathyanathan3https://orcid.org/0000-0001-9492-1342Mohammed Shibin4https://orcid.org/0000-0001-6100-9306Baby Jisha5https://orcid.org/0000-0001-5645-929XGovernment Dental College, Kozhikode, Faculty of Orthodontics and Dentofacial Orthopaedics, Kerala, IndiaKMCT Dental College, Department of Orthodontics, Kozhikode, IndiaGovernment Dental College, Kozhikode, Faculty of Orthodontics and Dentofacial Orthopaedics, Kerala, IndiaGovernment Dental College, Kozhikode, Faculty of Orthodontics and Dentofacial Orthopaedics, Kerala, IndiaGovernment Dental College, Kozhikode, Faculty of Orthodontics and Dentofacial Orthopaedics, Kerala, IndiaGovernment Dental College, Kozhikode, Faculty of Orthodontics and Dentofacial Orthopaedics, Kerala, IndiaObjective: To investigate the effect of deferred timing of therapeutic extraction on the rate of space closure during en masse anterior retraction. Methods: Twenty-six patients (aged 16-24 years) with bimaxillary protrusion, crowding <3 mm, requiring bilateral extraction of four first premolars were recruited. Permuted block randomization was done. Allocations were concealed in opaque envelopes which were numbered and sealed. Each patient’s right and left quadrant was randomly assigned for premolar extraction. The extraction of the contralateral side was deferred until the commencement of retraction. The primary outcome was the rate of space closure, and the secondary outcomes were anchorage loss and canine rotation. Blinding was applied only during the outcome assessment. The independent t-test and Intraclass correlation tests were used for statistical evaluation. Results: Twenty-four patients completed the study. The mean rate of space closure over a period of 4 months was found to be significantly higher for the recently extracted site (0.818±0.208) when compared with healed site(0.426±0.184)(p<0.001). The tipping of the canine was also significantly higher for the former (6.042°±1.398°) than the latter (5.125°±1.035°) (p<0.05). However, the amounts of anchorage loss and canine rotation were insignificant. No adverse effects were noted. Conclusion: The rate of space closure at the recent extraction site was faster than that at the healed site. There was no significant difference in the mesial movement of anchorage molars or rotation of canines into the extraction site. The tipping of canines was significantly greater in the recent extracted quadrant. The results of this trial indicate a clinical recommendation to initiate orthodontic retraction immediately following therapeutic extractions and offer a practical, non-invasive, safe procedure for increasing the rate of tooth movement.https://turkjorthod.org/articles/timing-of-therapeutic-extractions-can-affect-en-masse-anterior-retraction-a-split-mouth-randomized-clinical-trial/doi/TurkJOrthod.2024.2023.6accelerated tooth movementregional acceleratory phenomenonrate of space closurerecently extracted sitehealed site |
| spellingShingle | Devi Priya Shobha Sundareswaran Navnita Mishra SreehariSathyanathan Mohammed Shibin Baby Jisha Timing of Therapeutic Extractions Can Affect En Masse Anterior Retraction: A Split Mouth Randomized Clinical Trial Turkish Journal of Orthodontics accelerated tooth movement regional acceleratory phenomenon rate of space closure recently extracted site healed site |
| title | Timing of Therapeutic Extractions Can Affect En Masse Anterior Retraction: A Split Mouth Randomized Clinical Trial |
| title_full | Timing of Therapeutic Extractions Can Affect En Masse Anterior Retraction: A Split Mouth Randomized Clinical Trial |
| title_fullStr | Timing of Therapeutic Extractions Can Affect En Masse Anterior Retraction: A Split Mouth Randomized Clinical Trial |
| title_full_unstemmed | Timing of Therapeutic Extractions Can Affect En Masse Anterior Retraction: A Split Mouth Randomized Clinical Trial |
| title_short | Timing of Therapeutic Extractions Can Affect En Masse Anterior Retraction: A Split Mouth Randomized Clinical Trial |
| title_sort | timing of therapeutic extractions can affect en masse anterior retraction a split mouth randomized clinical trial |
| topic | accelerated tooth movement regional acceleratory phenomenon rate of space closure recently extracted site healed site |
| url | https://turkjorthod.org/articles/timing-of-therapeutic-extractions-can-affect-en-masse-anterior-retraction-a-split-mouth-randomized-clinical-trial/doi/TurkJOrthod.2024.2023.6 |
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