According to the results of this study an increased maxillary labial concavity was associated with reduced thickness of the labial cortical wall and the presence of a horizontal groove at the philtrum area.

This article describes a method of converting an interim maxillary removable complete denture to an interim implant-supported fixed complete denture. The advantages of this method are that it provides the opportunity to evaluate the patient's function and esthetics, and helps the accurate transfer of the maxillomandibular relationship to the laboratory. Consequently, the fabrication of the definitive prostheses is accurate, and the final result is predictable.