Purpose: The purpose of this study was to facilitate the recognition of denture patients who are unable to adapt to conventional dentures and who are likely to benefit from treatment using implant-supported prostheses. Materials and Methods: Sixty-nine patients who were referred for postgraduate prosthetic treatment at Wits Dental School completed a self-report inventory of items related to their dentures in current use. Conventional dentures were fabricated for all subjects. Those patients who could not adapt to conventional complete denture treatment were referred for treatment with implant-su pported prostheses provided that they conformed with the recommended criteria for this treatment modality. Results: Analysis of the inventory of pretreatment denture complaints yielded variables that differentiated between the group who remained with conventional dentures and the group that was referred for implants. Significant variables we re the period that a mandibular denture was used before new dentures were requested (P = 0.025); the period that a maxillary denture was used before further treatment was sought (P = 0.03); the discarding of a mandibular denture (P = 0.035); and pain complaints related to maxillary dentures (P = 0.045). A logistic regression model was used to compare the clinical division of the sample with that determined by the mathematic model. Sixty-six percent of the subjects who accepted conventional treatment and 69% of implant patients corresponded for both classifications. Conclusion: The authors conclude that pretreatment denture complaints can be useful diagnostic aids for evaluating patients who are likely to benefit from implant-supported prostheses.