The staggered installation of dental implants and its effect on bone stresses
PURPOSE: The aim of this study was to investigate the effect of offsetting the middle or peripheral implant on the compressive stress values in the crestal bone around the neck of the dental implant.
MATERIALS AND METHODS: Three finite element models describing three titanium implants installed in quadrilateral pieces of bone was executed. A 2-mm nickel chromium superstructure representing a bridge was modeled over the implant abutments. In model 1, implants were installed along a straight line. Model 2 had the middle implant installed outside the line connecting the two peripheral implants buccally. Model 3 had the mesial implant installed out of alignment. Six 100-N loads were modeled on top of the mesial and middle implants of the three models individually. Loads 1 and 2 were directed vertically on the mesial and middle implants, while loads 3 and 4 represented the horizontal loads in the buccal direction. Loads 5 and 6 were directed mesially on the mesial and central implants. Maximal compressive stress levels in the crestal bone of the three models were then investigated.
RESULTS: The results demonstrated that offset implant installation revealed slightly lower bone stresses under buccally or lingually directed horizontal forces. Slightly higher bone stresses under vertical loads were observed. Horizontal mesial or distal loads resulted in slightly higher bone stresses than those caused by buccal or lingual loading.
CONCLUSIONS: The in-line implant alignment clearly had the safest compressive stress outcome on the surrounding structure under vertical loads. Under buccolingual loads, implant alignment with peripheral offset would have, relatively, the safest compressive stress outcome on bone.
| Medienart: |
Artikel |
|---|
| Erscheinungsjahr: |
2007 |
|---|---|
| Erschienen: |
2007 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:9 |
|---|---|
| Enthalten in: |
Clinical implant dentistry and related research - 9(2007), 3 vom: 15. Sept., Seite 121-7 |
| Sprache: |
Englisch |
|---|
| Beteiligte Personen: |
Abu-Hammad, Osama [VerfasserIn] |
|---|
| Themen: |
Chromium Alloys |
|---|
| Anmerkungen: |
Date Completed 08.11.2007 Date Revised 21.11.2013 published: Print Citation Status MEDLINE |
|---|
| Förderinstitution / Projekttitel: |
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|---|
| PPN (Katalog-ID): |
NLM172285860 |
|---|
| LEADER | 01000naa a22002652 4500 | ||
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| 041 | |a eng | ||
| 100 | 1 | |a Abu-Hammad, Osama |e verfasserin |4 aut | |
| 245 | 1 | 4 | |a The staggered installation of dental implants and its effect on bone stresses |
| 264 | 1 | |c 2007 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ohne Hilfsmittel zu benutzen |b n |2 rdamedia | ||
| 338 | |a Band |b nc |2 rdacarrier | ||
| 500 | |a Date Completed 08.11.2007 | ||
| 500 | |a Date Revised 21.11.2013 | ||
| 500 | |a published: Print | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a PURPOSE: The aim of this study was to investigate the effect of offsetting the middle or peripheral implant on the compressive stress values in the crestal bone around the neck of the dental implant | ||
| 520 | |a MATERIALS AND METHODS: Three finite element models describing three titanium implants installed in quadrilateral pieces of bone was executed. A 2-mm nickel chromium superstructure representing a bridge was modeled over the implant abutments. In model 1, implants were installed along a straight line. Model 2 had the middle implant installed outside the line connecting the two peripheral implants buccally. Model 3 had the mesial implant installed out of alignment. Six 100-N loads were modeled on top of the mesial and middle implants of the three models individually. Loads 1 and 2 were directed vertically on the mesial and middle implants, while loads 3 and 4 represented the horizontal loads in the buccal direction. Loads 5 and 6 were directed mesially on the mesial and central implants. Maximal compressive stress levels in the crestal bone of the three models were then investigated | ||
| 520 | |a RESULTS: The results demonstrated that offset implant installation revealed slightly lower bone stresses under buccally or lingually directed horizontal forces. Slightly higher bone stresses under vertical loads were observed. Horizontal mesial or distal loads resulted in slightly higher bone stresses than those caused by buccal or lingual loading | ||
| 520 | |a CONCLUSIONS: The in-line implant alignment clearly had the safest compressive stress outcome on the surrounding structure under vertical loads. Under buccolingual loads, implant alignment with peripheral offset would have, relatively, the safest compressive stress outcome on bone | ||
| 650 | 4 | |a Journal Article | |
| 650 | 7 | |a Chromium Alloys |2 NLM | |
| 650 | 7 | |a Dental Implants |2 NLM | |
| 650 | 7 | |a Dental Materials |2 NLM | |
| 650 | 7 | |a Titanium |2 NLM | |
| 650 | 7 | |a D1JT611TNE |2 NLM | |
| 700 | 1 | |a Khraisat, Ameen |e verfasserin |4 aut | |
| 700 | 1 | |a Dar-Odeh, Najla |e verfasserin |4 aut | |
| 700 | 1 | |a Jagger, Daryll C |e verfasserin |4 aut | |
| 700 | 1 | |a Hammerle, Christoph H F |e verfasserin |4 aut | |
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