Abstract
f lass ionom er cem ent was in tro duced to dentistry by W ilson and Kent.1 The cement consists of an aluminosilicate glass powder that is mixed w ith a poly acrylic acid liquid. Bonding of the cement to enamel and dentin is claimed to occur by means of polar and ionic attractions or physicochemical adhesion.2 Adherence of th is restorative m aterial to dentin would provide a significant advantage for restoring cervical erosion areas that have a minimum depth of 1 mm.3 The restora tion of anatomically deficient contours in the cervical areas of teeth can contribute to a patient’s dental health4 and general well-being. Such a restoration can im prove m outh hygiene by facilita ting home care procedures, and relieve dis comfort from thermal or tactile stimuli by covering the exposed dentin.5 This study was initiated to evaluate the clinical characteristics and usefulness of a glass ionomer cement w hen used to re store anatomically deficient contours in the cervical areas of teeth w ithout the use of cavity preparation to aid in retention. The six-month evaluation was reported earlier.6 The restorations evaluated for this report had been in place for four to five years.
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