34 Clinical evidence and Science Fig. 18_PROGRESSIVE-LINE implant placed in posterior maxilla with simultaneous sinus lift. Courtesy of Dr. R. Polsbroek 5.4 Ncm. The torque was controlled using the appropriate drilling protocol with dense bone drill or tap in situations with exceeding torques. Sinus augmentation procedures with direct implant placement were performed successfully in 149 cases. Even with residual bone height of 2.4 mm in combination with external sinus lift the implant showed primary stability. More importantly, no complications and no implant losses were noted during the observation period. The author concluded that with the possibility to control the insertion torque with the flexible drilling protocol the implant system can be used in every indication and bone quality. Immediate implant placement in extraction sockets The use in extraction sockets (immediate implant placement) and immediate loading was analyzed in a small case series with 11 CONELOG® PROGRESSIVE-LINE implants by Conserva (2019) (38). Insertion torques in a range from 36 to 55 Ncm were noted and high ISQ values between 74 and 87 were measured. Accordingly, the primary stability was high enough to restore the implants immediately. Use in soft bone In very soft bone the drill protocol for PROGRESSIVE-LINE implants demands an under dimensioned preparation of the implant bed to achieve adequate primary stability. The primary stability of two different tapered implant systems (CONELOG® PROGRESSIVE-LINE and ICX Active Master, Medentis) in soft bone was assessed by RFA (ISQ) and Periotest in an experimental study using bovine ribs (Krischik et al. 2021 (39)). Comparing the results of the CONELOG® implants when inserted according to the standard drilling protocol better primary stability could be achieved with the under preparation drilling protocol allowing the implants to be immediately loaded. KEY TAKE OUTS: PROGRESSIVE-LINE The PROGRESSIVE-LINE implants are consistently designed to develop high initial stability. First clinical cases confirmed an excellent primary stability of the PROGRESSIVE-LINE implants based on insertion torque, ISQ measurements, and Periotest in the intended indications soft bone, extraction sockets, and with sinus lift procedures (Hermann (40), Conserva (38), Ruppin (37), Krischik et al. (39)). The crestal anchorage thread seem to make it possible to place the implant with primary stability in patients with low residual bone height of less than 3 mm (37). CLINICAL EVIDENCE FOR CAMLOG® AND CONELOG® IMPLANTS
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