IADR Abstract Archives

Clinical Behavior of All-Ceramic Inlay-Retained Bridges After 18 Months

Objective:

To evaluate the clinical behavior of all-ceramic inlay-retained bridges (IRB) after an average observation period of 18 months.

 

Method:

20 all-ceramic 3-unit IRBs (IPS e.max ZirCAD/ZirPress, Ivoclar Vivadent, Schaan, FL) were adhesively cemented (total etch technique) and evaluated clinically after an average observation period of 18 months by means of FDI criteria for evaluation of indirect restorations (Hickel et al. 2007). These criteria include the evaluation concerning esthetic (A), functional (B) and biological (C) properties. In addition a SQUACE evaluation (semi quantitative clinical evaluation) of each restoration was conducted. For statistical analysis SPSS 16.00 was used.

 

Results:

After a mean observation time of 18 months all IRBs were in function.

 

properties

% of restorations

A = esthetic

B = functional

C = biological

surface luster

marginal staining

color stability / translucency

fractures / retention

marginal adaptation / marginal irregularity

patient's view

postoperative (hyper-) sensitivity

α1

excellent / very good

20

65

85

75

40

80

95

α2

good, after correction very good

75

35

15

10

50

15

5

β

sufficient, no unacceptable effects

5

---

---

10

10

5

---

γ

unsatisfactory, but reparable

---

---

---

5

---

---

---

 

The SQUACE evaluation revealed mean values for marginal staining of 1.75%(±2.45) and marginal irregularities for 7.25%(±7.52) of the IRB`s total margin length.

 

Conclusion:

After an average time of 18 months clinical service 95% of the 3-unit all-ceramic IRBs presented an excellent to sufficient clinical behavior. Only in one case the veneering material fractured (including the margin), but it was reparable and the IRB is still in function. For marginal adaptation 2 cases were rated as beta, but overall only 7.25% marginal irregularities of IRB`s total margin occurred.

Therefore, all-ceramic IRBs made of IPS e.max ZirCAD/ZirPress seem reliable as a defect-oriented alternative for posterior single tooth replacement.


IADR/PER General Session
2010 IADR/PER General Session (Barcelona, Spain)
Barcelona, Spain
2010
700
Dental Materials 4: Clinical Trials
  • Watzke, Ronny  ( Dental Clinic, R&D, Ivoclar Vivadent AG, Schaan, N/A, Liechtenstein )
  • Peschke, Arnd  ( Dental Clinic, R&D, Ivoclar Vivadent AG, Schaan, N/A, Liechtenstein )
  • Roulet, Jean-francois  ( R&D, Ivoclar Vivadent AG, Schaan, N/A, Liechtenstein )
  • Poster Session
    Clinical Research: Ceramic-based Materials
    07/15/2010