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ORIGINAL ARTICLE
Year : 2019  |  Volume : 22  |  Issue : 7  |  Page : 936-942

Effects of first permanent molar extractıon on space changes observed in the dental arch using data mining method


1 Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Hatay Mustafa Kemal University, Hatay, Turkey
2 Department of Pedodontics, Faculty of Dentistry, Hatay Mustafa Kemal University, Hatay, Turkey
3 Department of Computer Technologies, Hatay Mustafa Kemal University, Hatay, Turkey

Correspondence Address:
Dr. G Serindere
Department of Dentomaxillofacial Radiology, Dental Faculty, Hatay Mustafa Kemal University, Hatay
Turkey
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/njcp.njcp_52_19

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Aim: The high incidence of caries in first permanent molars (FPMs) makes premature extraction of these teeth common. The extraction of the permanent teeth results in various changes in the dental arch. The aim of this study was to evaluate space closure, the eruption of second permanent molars (SPMs), and changes in dental arch after extraction of the FPMs. Materials and Methods: Eruption of 83 SPMs was recorded and radiographically developmental stage of these SPMs in the pre-extraction panoramic radiograph was assessed. Space was measured between the distal surface of the second premolar and the mesial surface of SPM. Results: Out of 55 patients, 28 (50.9%) were males and 27 (49.1%) were females. Thirty-seven (44.6%) of 83 teeth belonged to category 1, 17 (20.5%) teeth belonged to category 2, and 5 (6.02%) teeth belonged to category 3. Although category 4 was not found, 24 (28.9%) teeth were observed to be in category 5. Out of all SPMs, 10.8% represented the ''ideal'' stage of Demirjian's dental development, stage E. Conclusion: In patients who had the FPMs extracted before the eruption of the SPM, it is important with regards to the patients' comfort and health to review the patient regularly and to determine any need for orthodontic treatment.


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