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Implants
Screw Retained Benefits
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<blockquote data-quote="lcmlabforum" data-source="post: 244918" data-attributes="member: 3238"><p>This is in the FWIW department.</p><p>There are many times when the proximal surfaces do not allow for adjustment more than</p><p>enameloplasty or will end up with sensitivity from tilted molars, etc. Then the implant was not</p><p>placed ideally. Now, you try to correct and use a screw-retained crown - may end up needing</p><p>more time to seat, but not impossible.</p><p>If you were to cement without conversion to a screw-retained option (hole in the crown) - this would</p><p>make things eaiser. However, you may run into problem if you choose a 'screw-mented' option,</p><p>trying that in without a Fit-checker or something to hold the crown to the abutment while you</p><p>insert and adjust the prox contacts, etc.</p><p>You may have to torque the abutment down first, adjust and then after you cement, the crown</p><p>did not seat fully, now you just lost the contact and you have to try and debond to add proximal </p><p>contact, arrghh!</p><p>If it was a one piece, screw-retained, alot easier to adj prox contacts.</p><p></p><p>Major disadvantage of one piece screw-retained, which is still my number 1 choice, is the cost</p><p>of alloys (I still like PFM metal occlusal and uses HN alloy routinely),and the ability of your lab</p><p>guy being able to cast a large coping/frame predictably, esp. when fabricating a FDP situation</p><p>(Fixed Dental Prosthesis).</p><p>And difficulty having screw-retained option in the anterior when the implant manufacturer has</p><p>limited prosthetic options and third parties do not have solutions like the Dynamic, or Nobel ASC.</p><p>LCM</p></blockquote><p></p>
[QUOTE="lcmlabforum, post: 244918, member: 3238"] This is in the FWIW department. There are many times when the proximal surfaces do not allow for adjustment more than enameloplasty or will end up with sensitivity from tilted molars, etc. Then the implant was not placed ideally. Now, you try to correct and use a screw-retained crown - may end up needing more time to seat, but not impossible. If you were to cement without conversion to a screw-retained option (hole in the crown) - this would make things eaiser. However, you may run into problem if you choose a 'screw-mented' option, trying that in without a Fit-checker or something to hold the crown to the abutment while you insert and adjust the prox contacts, etc. You may have to torque the abutment down first, adjust and then after you cement, the crown did not seat fully, now you just lost the contact and you have to try and debond to add proximal contact, arrghh! If it was a one piece, screw-retained, alot easier to adj prox contacts. Major disadvantage of one piece screw-retained, which is still my number 1 choice, is the cost of alloys (I still like PFM metal occlusal and uses HN alloy routinely),and the ability of your lab guy being able to cast a large coping/frame predictably, esp. when fabricating a FDP situation (Fixed Dental Prosthesis). And difficulty having screw-retained option in the anterior when the implant manufacturer has limited prosthetic options and third parties do not have solutions like the Dynamic, or Nobel ASC. LCM [/QUOTE]
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