Running room: Difference between revisions
DRosenbach (talk | contribs) m disambig |
DRosenbach (talk | contribs) greater explanation |
||
| Line 3: | Line 3: | ||
In [[dental implant|implant]] [[dentistry]], '''running room''' refers to the distance between the platform of a [[dental implant]] and the [[gingival margin]].<ref>Su, H; et al. <u>Considerations of implant abutment and crown contour: critical contour and subcritical contour</u>, ''Int J Perio Rest Dent'' 2010;30:335-343</ref> |
In [[dental implant|implant]] [[dentistry]], '''running room''' refers to the distance between the platform of a [[dental implant]] and the [[gingival margin]].<ref>Su, H; et al. <u>Considerations of implant abutment and crown contour: critical contour and subcritical contour</u>, ''Int J Perio Rest Dent'' 2010;30:335-343</ref> |
||
Adequate running room is necessary to allow the implant-supported [[crown (dentistry)|crown]] to exhibit a tooth-shaped contour despite the circular nature of implant platforms. |
Adequate running room is necessary to allow the implant-supported [[crown (dentistry)|crown]] to exhibit a tooth-shaped contour and despite the circular nature of implant platforms. For example, the [[arithmetic mean|mean]] [[Commonly used terms of relationship and comparison in dentistry|mesial-distal]] dimension of a [[maxillary central incisors]] at the points at which it contacts the adjacent teeth is 8.6 mm, but the mean mesial-distal dimension of the same tooth at the [[cementoenamel junction|cementoenamel junction (CEJ)]] is 6.4 mm. As the root tapers towards the apex, the mesial-distal dimension decreases, and so the mean mesial-distal dimension at the marginal crest of bone, which lies approximately 2 mm apical to the CEJ, is even less than that. The tooth has the [[apico-coronal]] distance from the marginal crest of bone to the contact point in order to increase from the much narrower mesial-distal dimension to the greater mesial-distal dimension, and this distance is partially subgingival (below the gum line) and partially supragingival (above the gun line). ''Running room'' refers to this subgingival apico-coronal distance. |
||
In general, it is recommended that implants be given approximately 3mm of running room in compliance with the [[rule of thumb]] that implants should be placed as deep as necessary and as shallow as possible.<ref name="Green">Greenstein, G; Cavallaro, J. <u>The relationship between biologic concepts and fabrication of surgical guides for dental implant placement</u>. ''Compendium'' 2007;28(4):130-137</ref> |
|||
When implants are placed too [[Commonly used terms of relationship and comparison in dentistry|palatally]] or [[Commonly used terms of relationship and comparison in dentistry|lingually]] due to aberrant anatomical landmarks, bone resorption or surgical error, it is wise to place the implant more [[Commonly used terms of relationship and comparison in dentistry|apically]] to increase the available running room in order to allow for a more convex emergence profile and avoid a [[Commonly used terms of relationship and comparison in dentistry|buccal]] ridge-lap of the prosthetic crown in [[fixed partial denture]] cases.<ref name="Green"/> |
When implants are placed too [[Commonly used terms of relationship and comparison in dentistry|palatally]] or [[Commonly used terms of relationship and comparison in dentistry|lingually]] due to aberrant anatomical landmarks, bone resorption or surgical error, it is wise to place the implant more [[Commonly used terms of relationship and comparison in dentistry|apically]] to increase the available running room in order to allow for a more convex emergence profile and avoid a [[Commonly used terms of relationship and comparison in dentistry|buccal]] ridge-lap of the prosthetic crown in [[fixed partial denture]] cases.<ref name="Green"/> |
||
Revision as of 16:11, 30 April 2013
- Not to be confused with the Running Room, an athletics apparel company.
In implant dentistry, running room refers to the distance between the platform of a dental implant and the gingival margin.[1]
Adequate running room is necessary to allow the implant-supported crown to exhibit a tooth-shaped contour and despite the circular nature of implant platforms. For example, the mean mesial-distal dimension of a maxillary central incisors at the points at which it contacts the adjacent teeth is 8.6 mm, but the mean mesial-distal dimension of the same tooth at the cementoenamel junction (CEJ) is 6.4 mm. As the root tapers towards the apex, the mesial-distal dimension decreases, and so the mean mesial-distal dimension at the marginal crest of bone, which lies approximately 2 mm apical to the CEJ, is even less than that. The tooth has the apico-coronal distance from the marginal crest of bone to the contact point in order to increase from the much narrower mesial-distal dimension to the greater mesial-distal dimension, and this distance is partially subgingival (below the gum line) and partially supragingival (above the gun line). Running room refers to this subgingival apico-coronal distance.
In general, it is recommended that implants be given approximately 3mm of running room in compliance with the rule of thumb that implants should be placed as deep as necessary and as shallow as possible.[2]
When implants are placed too palatally or lingually due to aberrant anatomical landmarks, bone resorption or surgical error, it is wise to place the implant more apically to increase the available running room in order to allow for a more convex emergence profile and avoid a buccal ridge-lap of the prosthetic crown in fixed partial denture cases.[2]
References
- ^ Su, H; et al. Considerations of implant abutment and crown contour: critical contour and subcritical contour, Int J Perio Rest Dent 2010;30:335-343
- ^ a b Greenstein, G; Cavallaro, J. The relationship between biologic concepts and fabrication of surgical guides for dental implant placement. Compendium 2007;28(4):130-137