The placement of implants immediately after tooth extraction is the ideal treatment option
in selected cases. However, previous studies have shown that placing an implant does not
avoid the shrinkage of the alveolar ridge. The aims of the present investigation were to
evaluate bone dimensions after immediate implant placement with simultaneous grafting
of the buccal gap, to determine if initial buccal bone width had an influence on bone
remodelling and to compare bone volume changes using a flap or a flapless approach after
6 months of healing.
Material and methods
This prospective study included patients who required an extraction and a subsequent
immediate implant placement at a non-molar site. In those cases where tooth extraction
was not feasible with a flapless approach (test group) a mucoperiosteal flap was carefully
elevated (control group). After extraction, a cone beam computed tomography (CBCT)
was taken. Then, an implant was placed and the buccal gap was grafted using anorganic
bovine bone. After 6 months of healing, a second CBCT was performed. A blinded
investigator superimposed both images and performed a series of measurements to
determine bone volume changes between the two time points.
Results
Thirty-five patients were included in this study, 20 of which belonged to the test group. All
together, the differences between baseline and 6 months in buccal plate height, lingual
10
plate height and in ridge width at 2, 4 and 6 mm were 0.48±1.35; 0.58±1.51; 0.64±0.81;
0.59±1.36 and 0.52±1.16 respectively. Only a moderate correlation was observed between
initial buccal plate width and buccal plate height at 6 months (p=0.0001). No statistically
significant differences were observed between flap and flapless approach.
Conclusion
A mean reduction of around 0,5mm in height and width after placing immediate implants
and filling the residual gap with anorganic bovine bone may be expected. No significant
association between initial buccal bone width and ridge width at 6 months was seen. No
statistically significant differences were found between the two treatment protocols
although more ridge reduction was observed for the flap group.
| Identifer | oai:union.ndltd.org:TDX_UIC/oai:www.tdx.cat:10803/387218 |
| Date | 30 June 2016 |
| Creators | Mazzocco, Fabio |
| Contributors | Stellini, Edoardo, Nart Molina, José, Universitat Internacional de Catalunya. Departament d'Odontologia |
| Publisher | Universitat Internacional de Catalunya |
| Source Sets | Universitat Internacional de Catalunya |
| Language | English |
| Detected Language | English |
| Type | info:eu-repo/semantics/doctoralThesis, info:eu-repo/semantics/publishedVersion |
| Format | 96 p., application/pdf |
| Source | TDX (Tesis Doctorals en Xarxa) |
| Rights | L'accés als continguts d'aquesta tesi queda condicionat a l'acceptació de les condicions d'ús establertes per la següent llicència Creative Commons: http://creativecommons.org/licenses/by-nc-nd/3.0/es/, info:eu-repo/semantics/openAccess |
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