[PDF][PDF] Orthodontic extraction frequencies in the 21 st century: Demographic and diagnostic factors affecting the likelihood of extraction

S Siva, S Rengalakshmi, SA Kumar… - Drug Invention …, 2019 - researchgate.net
S Siva, S Rengalakshmi, SA Kumar, S Dhanapal
Drug Invention Today, 2019researchgate.net
Introduction: The aim of this study was to report contemporary orthodontic extraction
frequencies at Saveetha Institute of Medical and Technical Sciences and to investigate what
patient-related factors might influence the likelihood of extraction. Materials and Methods:
The records of 805 consecutive patients treated at the Saveetha Institute of Medical and
Technical Sciences of Chennai from July 2015 to December 2017 were analyzed. Logistic
regression, adjusting for all recorded patient risk factors for extraction, was used to examine …
Introduction
The aim of this study was to report contemporary orthodontic extraction frequencies at Saveetha Institute of Medical and Technical Sciences and to investigate what patient-related factors might influence the likelihood of extraction.
Materials and Methods
The records of 805 consecutive patients treated at the Saveetha Institute of Medical and Technical Sciences of Chennai from July 2015 to December 2017 were analyzed. Logistic regression, adjusting for all recorded patient risk factors for extraction, was used to examine both the changes in extraction frequencies over time and the influence of individual patient factors on the odds of extraction.
Results
The overall extraction rate and the first four premolar extractions were the highest in 2016. Extractions were significantly more likely as maxillary and mandibular crowding increased (Odds ratio [OR], 0.85; 95% confidence intervals [CI], 0.73–0.98; OR, 0.77; 95% CI. 0.70–0.85).
Conclusion
Extractions were just as likely to be associated with crowding and with Class I and Class II dental and skeletal problems.
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