الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
This study was conducted to evaluate clinically and radiographically the soft and hard tissue changes occurring around three different types of provisional restorations, placed over integrating implants.
Fifteen partially edentulous patients having missed maxillary premolar were selected from the outpatient clinic of the Faculty of Dentistry, Minia University.
Patients were randomly divided into 3 groups, 5 patients each.
Group I (NI/I/AC)
One stage implant surgery with immediate non functional restoration via an acrylic temporary crown for 6 months, then the acrylic crowns was changed by definitive P.F.M crowns and evaluated during the next 12 months. {n = 5}
Group II (TS/D/AD)
2 stage implant surgery (submerged implants) with delayed loading, but with acrylic resin provisional partial denture for 6 months, the partial denture was changed by the definitive P.F.M crowns and evaluated during the next 12 months. {n = 5}
Group III(TS/D/RC)
2-stage implant surgery (submerged implants) with delayed loading, and with reinforced composite resin provisional fixed partial denture (fixed-fixed type) for 6 months. Then the provisional bridges was changed by the definitive P.F.M crowns and evaluated during the next 12 months. {n = 5}
All the patients in all groups were evaluated clinically and radiographically along the course of the study.
The clinical examination was carried out by the use of the gingival and plaque indexes. Also the examination included the condition of the teeth neighboring to the edentulous area, and the condition of the temporary prostheses.
The radiographic evaluation included the detection of the change in the marginal bone level, and the bone density around the osseointegrating implants through out the course of this study.
Data were tabulated, and statistically analyzed;
Under the limitations of the current study, the following conclusions could be deduced:
1.Microdent implant responded well when used with immediate and delayed loading techniques.
2.The resin bonded provisional restorations showed better gingival indices values than those of the provisional crowns in the immediate loading group.
3.No significant difference was detected among the three tested groups regarding the plaque index during the provisional period..
4.The provisional resin bonded bridges used during the healing phase yielded satisfactory results regarding esthetics, speech and oral hygiene.
5.Patients were satisfied with their fixed provisional restorations than with their removable ones.
6.The bone loss was higher in the delayed loading groups than in the immediate loading group.
7. The bone density in the delayed loading groups was lower than that in the immediate loading group.