ABSTRACT
PURPOSE: The aim of this study is to evaluate implant placement accuracy using the coordinate measure machine (CMM) and to assess how accurate implant angulations and point of entrance can be transferred when using a stereolithographic surgical template as a guide during implant placement. MATERIAL AND METHODS: Angulations, entrance points of 40 implants placed in 6 edentulous jaws using stereolithographic surgical template were evaluated. The angulations were noted in both mesio-distal and bucco-lingual planes. The central axis of each treatment-planned implant was determined using the CMM by locating 3 points along the hollow channel of the drill guide stainless steel sleeve of the stereolithographic surgical template and the central axis of the actual implant, evaluated postsurgically, were determined. Three points along the guide pins were noted after mounted to the implant fixture analogs on the working cast. The differences between the proposed and actual implant point of entrance and angulations were calculated and the data were analyzed using the paired t test. RESULTS: The mean mesio-distal angle deviation of the actual implant from the planned position was 0.7 +/- 5.02 degrees, and the mean bucco-lingual angle deviation was 0.46 +/- 4.43 degrees. Thirty implants (88%) and 31 implants (91%) recorded a <7 degrees angle deviation for the mesio-distal and bucco-lingual plane angle, respectively. No statistical significant difference was found for the angle deviation. The mean difference of the entrance point was within 0.2 +/- 0.72 mm, 29 implants (85%) were within <1 mm from the intended position. Statistically significant difference was shown for the entrance point deviation. CONCLUSION: When measured using the CMM, the stereolithographic surgical template was sufficiently accurate in transferring the planned implant position to the surgical field relative to the implant angulations and point of entrance. Further clinical studies using a greater number of patients are needed to confirm the results of this study.
Subject(s)
Computer-Aided Design , Dental Implantation, Endosseous/methods , Jaw, Edentulous/surgery , Patient Care Planning , Surgery, Computer-Assisted/methods , Dental Abutments , Dental Implantation, Endosseous/instrumentation , Dental Implants , Female , Humans , Image Processing, Computer-Assisted , Male , Middle Aged , Models, Dental , Osteotomy/instrumentation , Polymethyl Methacrylate , Surgery, Computer-Assisted/instrumentation , Tomography, X-Ray Computed , User-Computer InterfaceABSTRACT
When a patient with a missing or failing maxillary anterior tooth desires immediate tooth replacement, fabrication of a provisional restoration can be challenging. Due to individual anatomical variations in tooth shape, size, and supporting soft and hard tissue structures, there are no premanufactured components with an anatomical emergence profile that universally suits all individual situations. This article describes the fabrication of a screw-retained immediate provisional restoration that fulfills anatomic, biologic, and esthetic requirements.
Subject(s)
Dental Abutments , Dental Implantation, Endosseous/methods , Dental Implants, Single-Tooth , Dental Prosthesis, Implant-Supported , Crowns , Dental Prosthesis Design , Dental Prosthesis Retention/instrumentation , Dental Restoration, Temporary , Denture, Partial, Immediate , Gingiva/anatomy & histology , Humans , Tooth SocketABSTRACT
When a patient with a nonrestorable dentition desires an immediate restoration, fabrication and use of a stable surgical template can be challenging. Conventionally made surgical templates may lack stability and may, therefore, be less predictable. This article describes the fabrication of a surgical template that permitted the use of staged tooth extraction to facilitate predictable immediate implant placement in a patient with a nonrestorable dentition.
Subject(s)
Dental Implantation, Endosseous/instrumentation , Dental Implants , Tooth Extraction/methods , Dental Abutments , Dental Implantation, Endosseous/methods , Dental Impression Technique/instrumentation , Equipment Design , Humans , Mandible/diagnostic imaging , Mandible/surgery , Models, Dental , Patient Care Planning , Tomography, X-Ray ComputedABSTRACT
An approach is described for the management of missing interdental papillae associated with multiple adjacent maxillary anterior implants. The use of 1 implant instead of multiple implants to support a cantilivered fixed partial denture with an ovate pontic successfully enhanced the soft tissue contours to satisfy the patients esthetic needs and desires.
