Journal of Conservative Dentistry
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JOURNAL REVIEWS Table of Contents   
Year : 2009  |  Volume : 12  |  Issue : 2  |  Page : 80
Journal Reviews

Department of Conservative Dentistry and Endodontics, Meenakshi Ammal Dental College and Hospitals, Chennai - 60095, India

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Date of Web Publication10-Sep-2009

How to cite this article:
Seshadri S. Journal Reviews. J Conserv Dent 2009;12:80

How to cite this URL:
Seshadri S. Journal Reviews. J Conserv Dent [serial online] 2009 [cited 2022 Jan 19];12:80. Available from:
Calcific healing of a crown root fracture of a maxillary central incisor evaluated with spiral computed tomography and hounsfield units: A case report

Nandini S, Velmurugan N, Kandaswamy D

Trauma to anterior teeth results in crown root fracture in 5% of cases. Calcific healing of a complicated oblique crown root fracture is rarely reported in literature. This is because of continuous salivary exposure and contamination through the fracture site. The segment is usually removed and conventionally treated with root canal treatment. This article highlights the calcific healing of a traumatized maxillary central incisor with crown root fracture. This unique observation of healing following trauma was confirmed with the use of spiral computed tomography and Hounsfield units.

Dent Traumatol; 2008 Dec;24(6):e96-100.

Hypoxia-amplified proliferation of human dental pulp cells

Sakdee JB, White RR, Pagonis TC, Hauschka PV

Postnatal human dental pulp is a potentially promising source of progenitor cells. Sustaining and amplifying progenitor cell populations would be beneficial for basic science research with application in pulpal regeneration. Hypoxia has been observed to promote the undifferentiated cell state in various stem cell populations. The purpose of this study was to examine human dental pulp cells (DPCs) proliferation in normoxia and hypoxia. Dental pulp cells were obtained from third molars of adult patients and cultured in alpha modification of Eagle's medium culture medium with 10% fetal bovine serum. For cell proliferation, DPCs were divided into two groups: (1) DPCs incubated in normoxic conditions (20% oxygen tension) and (2) DPC incubated in hypoxic conditions (3% oxygen tension). Cell proliferation assays were performed every 2 to 3 days from day 3 to day 14 by trypsinization and quantification of cells with a hemacytometer. Fluorescence-activated cell sorting analysis was completed to investigate stem cell markers, CD133, and STRO-1. DPCs proliferated significantly more in hypoxia than in normoxia. The primitive stem cell marker, CD133, decreased in hypoxia, whereas the osteoprogenitor marker, STRO-1, increased by 8.5-fold. This study suggested that hypoxia is an effective treatment to amplify numbers of progenitor cells from human dental pulp.

J Endod 2009 Jun;35(6):818-23.

Assessment of pulp vitality: A review

Gopikrishna V, Pradeep G, Venkateshbabu N

One of the greatest diagnostic challenges in clinical practice is the accurate assessment of pulp status. This may be further complicated in paediatric dentistry where the practitioner is faced with a developing dentition, traumatized teeth, or young children who have a limited ability to recall a pain history for the tooth in question. A variety of pulp testing approaches exist, and there may be confusion as to their validity or appropriateness in different clinical situations. The aim of this paper is to provide the clinician with a comprehensive review of current pulp testing methods. A key objective is to highlight the difference between sensitivity testing and vitality testing. A biological basis for pulp testing is also provided to allow greater insight into the interpretation of pulp testing results. The rationale for, and methods of, assessing pulpal blood flow are described.

Int J Ped Dent 2009 Jan;19(1):3-15.

The effect of resin-based sealers on fracture properties of dentine

Jainaen A, Palamara JE, Messer HH

The study aims at determining whether resin-based sealer cements are able to strengthen root dentine, as measured by work of fracture (Wf), micro-punch shear strength (MPSS) and resistance to vertical root fracture (VRF). One hundred and twenty extracted premolar teeth were randomly assigned amongst four treatments before testing: intact, root canals prepared but unfilled, or root filled using epoxy- or urethane dimethacrylate (UDMA)-based sealer (plus core material). Samples were then prepared for measuring Wf, MPSS or VRF using standard test procedures. For all three tests, root canals filled using epoxy resin-based sealer were not statistically significantly different compared with UDMA resin , or different from both sound and prepared dentine. There was also no significant difference between sound dentine and prepared dentine for both Wf and resistance to VRF. Thus, neither epoxy nor UDMA resins used as sealer cements enhanced fracture resistance of root dentine when placed within root canals of extracted teeth.

Int Endod J. 2009 Feb;42(2):136-43.

Correspondence Address:
Savitha Seshadri
Department of Conservative Dentistry and Endodontics, Meenakshi Ammal Dental College and Hospitals, Chennai - 60095
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Source of Support: None, Conflict of Interest: None

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