Fixture design overview

The SLOCK® implants have been developed and extensively documented for both one-and two-stage surgical procedures.

Intended use
 In replacing missing teeth in single or multiple unit applications within the mandible or maxilla
 Indicated for immediate placement in extraction sites, partially or completely healed alveolar ridge situations
 Especially indicated for use in soft bone applications where implants with other implant design may be less effective
 Suitable for immediate loading in all indications, except in single tooth situations in soft and hollow bone (type III, IV) where implant stability may be difficult to obtain and immediate loading may not be appropriate.

*Immediate loading of single-tooth restoration is not recommended for SLOCK® implant.

It is important that the clinician takes local loading conditions into consideration when determining the number and spacing of short implants. Considering the reduced bone support provided by short implants, it is important for the purpose of early diagnosis and treatment that the clinician closely monitors soft tissue and supporting bone health status by means of probing and radiographic evaluation.

Reduced alveolar bone height is very common in the posterior jaws. The current treatment modality to replace the missing teeth with an implant-retained fixed partial denture includes sinus bone grafting in the maxilla and onlay bone graft in the mandible. These procedures are invasive and require more time and cost. Short dental implants are used as an alternative treatment modality to bone grafting procedures. To enhance success rate, certain principles should apply. Short implants could provide comparable results to those of longer implants. On the use of short implants, there are important biomechanical considerations. Among the risk factors examined, most failures of short implants can be attributed to poor bone quality in the maxilla and a machined surface. Although short implants in atrophied jaws can achieve similar long-term prognoses as standard dental implants with a reasonable prosthetic design.
The rationale behind shorter dental implants includes an expansion of the patient pool that can benefit from dental implants, decreased procedural invasiveness, and subsequent shorter osseointegration and healing periods. While the stability and efficacy of shorter implants have been criticized, research about short implants has continued and led to numerous clinical studies that have demonstrated a comparable clinical effectiveness between short and long implants. The success of short implant suggests a potential for decreasing the frequency of complications, such as inferior alveolar canal perforation, and of being able to provide dental implants to individuals who have inadequate alveolar bone levels for conventionally longer implants.

Use of wide-diameter implants to replace single molars:
The ultimate goal in modern esthetic dentistry is the restoration of lost hard and soft tissues by imitating nature as closely as possible. With the increasing esthetic awareness of patients, surgical and technical developments, and dentists’ enhanced skills and knowledge, optimal function and esthetics are achievable even with implant-supported restorations in molar regions. Anatomic and morphologic factors and poor bone quantity and quality might reduce success rates of dental implants in the posterior jaw. Today, there are two options to replace a single missing molar by an implant-supported crown: the single wide-diameter implant or two standard-diameter implants. In cases where adequate supporting bone exists, wide-diameter implants can offer an advantage by anchoring the implant into more dense bone that is concentrated toward the outer edges of the underlying bone. These implants also provide greater surface area, which reduces the amount of force directed to the underlying bone and may increase the long-term prognosis of the implant. Implant restoration of the molar area can be particularly challenging because of the heavy occlusal force exerted on this tooth. Bone quantity and quality, as well as fixture characteristics, play important roles in the long-term success of any implant., 2014.05.31 오후 12:56:18 | 31210 hit(s) 0 comment(s)
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