Clinical Observation of Cast Gold Inlay Restoration on Young Permanent First Molars (Report 3)

Abstract

Postoperative (30 to 3361 days) clincial observations were made on 200 cases of 20 carat inlay restoration on young permanent first molars.
The inlay restorations were examined clinically by means of an explorer and colour photography.
From the results of this experiment, the following conclusions were obtained.
1) Changes observed in inlay restoration: Discolourlation: 6 cases (3%), surface roughness: 5 cases (2.5%), and dislodgement of inlay: 6 cases (3%).
2) Changes observed in tooth structure: Tooth fracture: 7 cases (3.5%), recurrent caries: 11 cases (5.5%), and newly formed caries (except recurrent caries): 34 cases (17%).
3) Since young permanent first molars are highly susceptible to decay, for the purpose of perventing recurrent caries and newly formed caries, new methods of extention for pervention and improvement of cavity form for gold inlay restoration are advisable.