Strauman dental implants is usually inserted subcrestal to alveolar bone.
I assume that this question is related to the location of the micro gap relative to the soft and hard tissue. Before we even think about that sort of question we probably need to realize that there is never any answer that applies to all clinical situations. So if the question is should we place all implants below the crest of boneThe answer is unequivocally no. There are always exceptions as to why you don't place below or why you don't place above the level of the bone crest. There are implants that have no micro gap below the soft tissue level, there are one piece implants that certainly cannot be placed subcrestal. No matter where you place an implant there is going to be a biologic response that establishes a thickness of bone, eight thickness of connective tissue Andy thickness of epithelium it must reach a harmonious level but the problem is that we don't know what harmonious level is required for each individualpatient. We don't have an instrument that tells us that patient a would respond well toA certain amount of bone in a horizontal dimension away from the implant, a buckle thickness lingual thickness mesial and distal thickness of bone in comparison to a certain height which might be vertical or horizontal depending upon how you handle the platform of the implant of connective tissue in and out of epithelium. Look at the classic biologic width article by Gargiulo et al and you will find that the numbers that they observed for connective tissue you and epithelium around natural teeth had a very broad range. What gets quoted is the biological with requirements for connective tissue and epithelium of about 1 mm each resulting in a total width of 2 mmbut that was nothing more then an average number in the range extended to a total of about nine from a minimum of about 0 mm. Will it be more or less predictable around implants? The answer to that question is as variable as the implant design market. There are literally thousands of different implants in the marketplace all that have different nuances relative to design and all that are going to have different biological responses based upon the individual patient so take the variable of the implant design and the vamiable of the patient biologic response and what we have is a pretty variable set of outcomes. Hence the reason that I said at the beginning of this response that if you ever ask a question that includes the word "all" in it you can pretty much guarantee that the answer is always going to be know that there is no universal answer for any question in the field of biology. In the field of chemistry you might have definitive answers but not when we depend upon biological responses as we doin the clinical practice of dentistry.
Specifically, as you look at the implant manufacturers that you described you have to understand that they have different product offerings for different clinical situations. Some implants are made to be placed at the level of the bone and some implants are being made to be placed at the level of the soft tissue. So the implant designs associated with these two manufactures are variable depending upon the clinical setting.
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