Objectives: The purpose of this study was: 1) to evaluate a technique which uses CAD-CAM technologies for immeadiate loading of implants; 2) to state the accuracy of the CAD-CAM sistem used. Methods: 10 patients ranging in age from 40 to 65 years, having full and partial edentulism, were recruited and, after receiving a scannografic template, subjected to CT-scan. Simplant® CAD-CAM sistem was used for planning surgery and fabricating 15 series of mucosa-supported stereolithographic surgical templates (SST) and 3 series of bone-supported SST. These templates were used to simulate surgery on plaster casts in order to mill standard implants abutments and build fixed provisional prosthesis before surgery time. During surgical phase patients were divided in 2 groups: Guided Group (GG), where both drilling and implant insertion were template-guided; and Non Guided Group (NGG) where only drilling was template-guided; 115 implants (Premium®Trisurface, Sweden&Martina, Padova, Italy), with a medium lenght of 12mm and a medium diameter of 3,75mm, were placed using flapless or traditional surgery; milled abutments were screwed; parallelism controlled; final impressions taken and provisinal prosthesis delivered. Final metal-ceramic restorations were delivered within 20 days. Control CT-Scans were taken after two months to compare actual implant positions with virtually planned ones. Results: At 3 years follow-up, 4 of 115 implants were lost within the first 6 months. Actual and virtually planned positions were compared on the Vestibular-Oral axis (with a Matching Rate (MR) of 47,39% NGG vs 96,42% GG); on the Mesio-Distal axis (MR=65,73% NGG vs 87,02% GG); and globally (MR=56,97% NGG vs 91,89% GG). Mucosa thickness does not appear to influence the accuracy of the sistem. Conclusions: The “Immediate Smile” appears a confident technique for predictable placement and immediate loading of implants; the accuracy of Simplant® seems satisfactory when also implants insertion is template-guided, whatever is the support of the template.
The immediate smile / Cassetta, Michele; Dell'Aquila, D; Vozzolo, S. V.. - In: JOURNAL OF DENTAL RESEARCH. - ISSN 0022-0345. - 86:(2007), pp. 113-114.
The immediate smile
CASSETTA, Michele;
2007
Abstract
Objectives: The purpose of this study was: 1) to evaluate a technique which uses CAD-CAM technologies for immeadiate loading of implants; 2) to state the accuracy of the CAD-CAM sistem used. Methods: 10 patients ranging in age from 40 to 65 years, having full and partial edentulism, were recruited and, after receiving a scannografic template, subjected to CT-scan. Simplant® CAD-CAM sistem was used for planning surgery and fabricating 15 series of mucosa-supported stereolithographic surgical templates (SST) and 3 series of bone-supported SST. These templates were used to simulate surgery on plaster casts in order to mill standard implants abutments and build fixed provisional prosthesis before surgery time. During surgical phase patients were divided in 2 groups: Guided Group (GG), where both drilling and implant insertion were template-guided; and Non Guided Group (NGG) where only drilling was template-guided; 115 implants (Premium®Trisurface, Sweden&Martina, Padova, Italy), with a medium lenght of 12mm and a medium diameter of 3,75mm, were placed using flapless or traditional surgery; milled abutments were screwed; parallelism controlled; final impressions taken and provisinal prosthesis delivered. Final metal-ceramic restorations were delivered within 20 days. Control CT-Scans were taken after two months to compare actual implant positions with virtually planned ones. Results: At 3 years follow-up, 4 of 115 implants were lost within the first 6 months. Actual and virtually planned positions were compared on the Vestibular-Oral axis (with a Matching Rate (MR) of 47,39% NGG vs 96,42% GG); on the Mesio-Distal axis (MR=65,73% NGG vs 87,02% GG); and globally (MR=56,97% NGG vs 91,89% GG). Mucosa thickness does not appear to influence the accuracy of the sistem. Conclusions: The “Immediate Smile” appears a confident technique for predictable placement and immediate loading of implants; the accuracy of Simplant® seems satisfactory when also implants insertion is template-guided, whatever is the support of the template.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
