Background
To overcome the disadvantages of staged implant surgery, immediate insertion and loading concepts as well as flapless surgery approaches have been introduced in recent years. Specifically, promising results in terms of high success rates and remarkable esthetic outcomes have been reported for implants placed in extraction sockets of single and double-rooted teeth. However, there are just a few studies that illustrate results of immediate insertion of implants into fresh extraction sockets of molars.
Aim/Hypothesis
With the introduction of ASTRA TECH Implant System™ EV, a dental implant with a wider implant diameter, OsseoSpeed™ EV 5.4S (DENTSPLY Implants, Mölndal, Sweden), has been developed to improve primary stability even in larger extraction sites. This pilot study examined the clinical performance of OsseoSpeed™ EV 5.4S implants and the transgingival components in a one-stage procedure with immediate insertion and peri-implant grafting in molar extraction sites. Results of this treatment concept up to 3 years will be reported.
Material and Methods
63 OsseoSpeed EV 5.4S implants were inserted in 58 patients (32 males, 26 females, 23 to 94 years, mean 52,7 years). All implants were placed immediately into the center of molar extraction sockets (28 maxillar, 35 mandibular implants). Peri-implant bony defects resulting from the extraction of the multi-rooted teeth were reconstructed simultaneously with autogenous bone chips in a flapless approach. All implants received wide healing abutments (HealDesignTM EV 6.5 mm diameter, DENTSPLY Implants, Mölndal, Sweden) for a one-stage treatment protocol. Periimplant mucosa was adapted without covering the graft completely. The primary outcome variables were marginal bone level change, and the secondary outcome variables were implant survival and soft tissue parameters.
Results
Mean follow-up was 21 months (range 6-42 months). There was no implant loss (cumulative survival rate 100%). The vertical marginal bone level recovered to the level of the implant shoulder from the time of implant insertion to the final follow-up. The horizontal width of the alveolar crest did not change significantly from pre-op examination to the final follow-up (level 1 mm below the crest from 10.8 to 10.1 mm (6 %), level 3 mm unchanged 11.5 mm, level 6 mm from 12.8 to 12.4 mm (3.5%)). The width of the keratinized mucosa remained stable; peri-implant probing depth ranged between 2 and 4 mm.
Conclusions and clinical implications
Stability of vertical marginal bone levels, high cumulative survival rate and soft tissue stability indicate proof of principle for immediate insertion of OsseoSpeed™ EV 5.4S implants in molar extraction sites. Within the limited time of follow up, the horizontal crestal resorption was small but warrants further evaluation.
Background
To overcome the disadvantages of staged implant surgery, immediate insertion and loading concepts as well as flapless surgery approaches have been introduced in recent years. Specifically, promising results in terms of high success rates and remarkable esthetic outcomes have been reported for implants placed in extraction sockets of single and double-rooted teeth. However, there are just a few studies that illustrate results of immediate insertion of implants into fresh extraction sockets of molars.
Aim/Hypothesis
With the introduction of ASTRA TECH Implant System™ EV, a dental implant with a wider implant diameter, OsseoSpeed™ EV 5.4S (DENTSPLY Implants, Mölndal, Sweden), has been developed to improve primary stability even in larger extraction sites. This pilot study examined the clinical performance of OsseoSpeed™ EV 5.4S implants and the transgingival components in a one-stage procedure with immediate insertion and peri-implant grafting in molar extraction sites. Results of this treatment concept up to 3 years will be reported.
Material and Methods
63 OsseoSpeed EV 5.4S implants were inserted in 58 patients (32 males, 26 females, 23 to 94 years, mean 52,7 years). All implants were placed immediately into the center of molar extraction sockets (28 maxillar, 35 mandibular implants). Peri-implant bony defects resulting from the extraction of the multi-rooted teeth were reconstructed simultaneously with autogenous bone chips in a flapless approach. All implants received wide healing abutments (HealDesignTM EV 6.5 mm diameter, DENTSPLY Implants, Mölndal, Sweden) for a one-stage treatment protocol. Periimplant mucosa was adapted without covering the graft completely. The primary outcome variables were marginal bone level change, and the secondary outcome variables were implant survival and soft tissue parameters.
Results
Mean follow-up was 21 months (range 6-42 months). There was no implant loss (cumulative survival rate 100%). The vertical marginal bone level recovered to the level of the implant shoulder from the time of implant insertion to the final follow-up. The horizontal width of the alveolar crest did not change significantly from pre-op examination to the final follow-up (level 1 mm below the crest from 10.8 to 10.1 mm (6 %), level 3 mm unchanged 11.5 mm, level 6 mm from 12.8 to 12.4 mm (3.5%)). The width of the keratinized mucosa remained stable; peri-implant probing depth ranged between 2 and 4 mm.
Conclusions and clinical implications
Stability of vertical marginal bone levels, high cumulative survival rate and soft tissue stability indicate proof of principle for immediate insertion of OsseoSpeed™ EV 5.4S implants in molar extraction sites. Within the limited time of follow up, the horizontal crestal resorption was small but warrants further evaluation.
Background
To overcome the disadvantages of staged implant surgery, immediate insertion and loading concepts as well as flapless surgery approaches have been introduced in recent years. Specifically, promising results in terms of high success rates and remarkable esthetic outcomes have been reported for implants placed in extraction sockets of single and double-rooted teeth. However, there are just a few studies that illustrate results of immediate insertion of implants into fresh extraction sockets of molars.
Aim/Hypothesis
With the introduction of ASTRA TECH Implant System™ EV, a dental implant with a wider implant diameter, OsseoSpeed™ EV 5.4S (DENTSPLY Implants, Mölndal, Sweden), has been developed to improve primary stability even in larger extraction sites. This pilot study examined the clinical performance of OsseoSpeed™ EV 5.4S implants and the transgingival components in a one-stage procedure with immediate insertion and peri-implant grafting in molar extraction sites. Results of this treatment concept up to 3 years will be reported.
Material and Methods
63 OsseoSpeed EV 5.4S implants were inserted in 58 patients (32 males, 26 females, 23 to 94 years, mean 52,7 years). All implants were placed immediately into the center of molar extraction sockets (28 maxillar, 35 mandibular implants). Peri-implant bony defects resulting from the extraction of the multi-rooted teeth were reconstructed simultaneously with autogenous bone chips in a flapless approach. All implants received wide healing abutments (HealDesignTM EV 6.5 mm diameter, DENTSPLY Implants, Mölndal, Sweden) for a one-stage treatment protocol. Periimplant mucosa was adapted without covering the graft completely. The primary outcome variables were marginal bone level change, and the secondary outcome variables were implant survival and soft tissue parameters.
Results
Mean follow-up was 21 months (range 6-42 months). There was no implant loss (cumulative survival rate 100%). The vertical marginal bone level recovered to the level of the implant shoulder from the time of implant insertion to the final follow-up. The horizontal width of the alveolar crest did not change significantly from pre-op examination to the final follow-up (level 1 mm below the crest from 10.8 to 10.1 mm (6 %), level 3 mm unchanged 11.5 mm, level 6 mm from 12.8 to 12.4 mm (3.5%)). The width of the keratinized mucosa remained stable; peri-implant probing depth ranged between 2 and 4 mm.
Conclusions and clinical implications
Stability of vertical marginal bone levels, high cumulative survival rate and soft tissue stability indicate proof of principle for immediate insertion of OsseoSpeed™ EV 5.4S implants in molar extraction sites. Within the limited time of follow up, the horizontal crestal resorption was small but warrants further evaluation.
Background
To overcome the disadvantages of staged implant surgery, immediate insertion and loading concepts as well as flapless surgery approaches have been introduced in recent years. Specifically, promising results in terms of high success rates and remarkable esthetic outcomes have been reported for implants placed in extraction sockets of single and double-rooted teeth. However, there are just a few studies that illustrate results of immediate insertion of implants into fresh extraction sockets of molars.
Aim/Hypothesis
With the introduction of ASTRA TECH Implant System™ EV, a dental implant with a wider implant diameter, OsseoSpeed™ EV 5.4S (DENTSPLY Implants, Mölndal, Sweden), has been developed to improve primary stability even in larger extraction sites. This pilot study examined the clinical performance of OsseoSpeed™ EV 5.4S implants and the transgingival components in a one-stage procedure with immediate insertion and peri-implant grafting in molar extraction sites. Results of this treatment concept up to 3 years will be reported.
Material and Methods
63 OsseoSpeed EV 5.4S implants were inserted in 58 patients (32 males, 26 females, 23 to 94 years, mean 52,7 years). All implants were placed immediately into the center of molar extraction sockets (28 maxillar, 35 mandibular implants). Peri-implant bony defects resulting from the extraction of the multi-rooted teeth were reconstructed simultaneously with autogenous bone chips in a flapless approach. All implants received wide healing abutments (HealDesignTM EV 6.5 mm diameter, DENTSPLY Implants, Mölndal, Sweden) for a one-stage treatment protocol. Periimplant mucosa was adapted without covering the graft completely. The primary outcome variables were marginal bone level change, and the secondary outcome variables were implant survival and soft tissue parameters.
Results
Mean follow-up was 21 months (range 6-42 months). There was no implant loss (cumulative survival rate 100%). The vertical marginal bone level recovered to the level of the implant shoulder from the time of implant insertion to the final follow-up. The horizontal width of the alveolar crest did not change significantly from pre-op examination to the final follow-up (level 1 mm below the crest from 10.8 to 10.1 mm (6 %), level 3 mm unchanged 11.5 mm, level 6 mm from 12.8 to 12.4 mm (3.5%)). The width of the keratinized mucosa remained stable; peri-implant probing depth ranged between 2 and 4 mm.
Conclusions and clinical implications
Stability of vertical marginal bone levels, high cumulative survival rate and soft tissue stability indicate proof of principle for immediate insertion of OsseoSpeed™ EV 5.4S implants in molar extraction sites. Within the limited time of follow up, the horizontal crestal resorption was small but warrants further evaluation.