Abstract
Objectives
Narrowed radicular pulp spaces are frequently observed in teeth wearing extended restorations. The present study investigates whether the narrowing of particularly the radicular pulp space can be attributed to coronal restorations.
Materials and methods
The study is based on an anonymized copy of the cone-beam computed tomography (CBCT) database from the Center of Dental Medicine of the University of Zurich. One hundred CBCT scans were selected out of 7317 data sets to match either a crowned (group A; n = 50) or a filled tooth (group B; n = 50) with a contralateral healthy, unrestored, and caries-free control tooth at the same position, respectively. Cross-sectional images were adjusted in the coronal, middle, and apical root third of each subjected tooth. Screenshots were taken in that position and analyzed. The area occupied by the pulp space was determined as percentage area of the whole root diameter on each cross section. The resulting values were compared between restored and control teeth.
Results
In both groups (crowned and filled teeth) and in all the three root thirds, the radicular pulp space was significantly narrower in the restored teeth compared to the control teeth. The strongest narrowing effect was observed in the coronal root third and it decreased towards the apical root third (both groups).
Conclusions
Teeth with coronal restorations show within the limitations of the present study a significant narrowing of their radicular pulp space.
Clinical relevance
The asserted narrowing could have a complicating effect if root canal treatment becomes necessary in those teeth.
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The authors declare that they have no conflict of interest.
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The work was supported by the Clinic for Preventive Dentistry, Periodontology, and Cariology of the Center of Dental Medicine, University of Zurich, Switzerland.
Ethical approval
All procedures performed in the present study were in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. Ethical approval was given by the local ethical committee (Kantonale Ethikkommission Zürich, submission No. KEK-ZH-Nr. 2014-0099).
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Fleig, S., Attin, T. & Jungbluth, H. Narrowing of the radicular pulp space in coronally restored teeth. Clin Oral Invest 21, 1251–1257 (2017). https://doi.org/10.1007/s00784-016-1899-8
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DOI: https://doi.org/10.1007/s00784-016-1899-8