Two-year clinical study on postoperative pulpal complications arising from the absence of a glass-ionomer lining in deep occlusal resin-composite restorations.
OBJECTIVE
To observe the effects of glass-ionomer cement (GIC) lining on the risk of pulpal complications in deep occlusal cavities with resin-based restorations.


METHODS
Fifty-three patients, aged 18-30 years, who had one or two deep occlusal carious lesions (≥3 mm in depth) in molars, were recruited. Dental caries were removed, and the prepared cavity was restored with resin composite using one of two restorative procedures: (a) without GIC lining; and (b) with (resin-modified) GIC lining. Restored teeth were evaluated for any pulpal complications (subjective symptoms, objective signs or loss of tooth vitality) at 1 month (baseline), 1 year, and 2 years after restoration.


RESULTS
After excluding shallow cavities, 31 restorations without GIC lining, and 31 restorations with GIC lining, were placed and recalled at baseline without any pulpal complications. At the 1- and 2-year recalls, six patients who had restorations in group 1, and 13 in group 2, had dropped out. None of the remaining teeth in the two groups exhibited pulpal complications at either recall period, regardless of GIC lining placement.


CONCLUSIONS
The absence of GIC lining does not increase the risk of pulpal complications in deep occlusal cavities restored with resin-based restorations in either the short or long term.
Department of Operative Dentistry, Faculty of Dentistry, Mahidol University, Bangkok, Thailand.
Danuchit
D
Banomyong
Harold
H
Messer
D000293:Adolescent; D000328:Adult; D003188:Composite Resins / Q000737:chemistry; D003731:Dental Caries / Q000628:therapy*; D003736:Dental Cavity Lining / Q000379:methods*; D003737:Dental Cavity Preparation / Q000295:instrumentation / Q000379:methods; D003738:Dental Cements / Q000737:chemistry; D003743:Dental Enamel / Q000473:pathology; D003764:Dental Materials / Q000737:chemistry; D003782:Dental Pulp / Q000473:pathology*; D003791:Dental Pulp Test; D003793:Dental Restoration, Permanent / Q000379:methods*; D003804:Dentin / Q000473:pathology; D003807:Dentin Sensitivity / Q000209:etiology; D005260:Female; D005500:Follow-Up Studies; D005899:Glass Ionomer Cements / Q000627:therapeutic use*; D006801:Humans; D008297:Male; D008963:Molar / Q000473:pathology; D057872:Pulp Capping and Pulpectomy Agents / Q000627:therapeutic use*; D019279:Resin Cements / Q000737:chemistry; D016896:Treatment Outcome; D055815:Young Adult
C554641:Adper single bond 2; C438313:Clearfil SE Bond; D003188:Composite Resins; D003738:Dental Cements; D003764:Dental Materials; C474035:Filtek Supreme; D005899:Glass Ionomer Cements; D057872:Pulp Capping and Pulpectomy Agents; D019279:Resin Cements; C084541:Fuji glass-ionomer lining cement
clinical trial; deep occlusal cavities; glass-ionomer cement; pulpal complication; resin composite