الفهرس 
Clinical Outcomes of Premolars Restored with Ceramic Vonlay Restorations versus Onlay Using Modified USPHS Criteria : Randomized Clinical trial
ABSTRACTOnly 14 pages are availabe for public view
 |  | from | 204 |  |  |
| | | from | 204 | | |
Abstract
Evaluate the clinical performance of premolars restored with ceramic vonlays versus onlays
using modified USPHS criteria regarding fracture, marginal integrity, marginal discoloration and
patient satisfaction.
Methodology: 26 partial coverage restorations for vital premolar teeth were constructed from
pressable lithium disilicate ceramic material. According to the preparation designs, premolar teeth
were divided into two groups. group l: (complete onlay preparation design) and group 2: (vonlay
preparation design). It was cemented with dual cure-adhesive resin cement. Immediately following
cementation, fracture, marginal integrity, marginal discolouration, and patient satisfaction were
evaluated using modified USPHS restoration clinical assessment guidelines. After three, six, nine,
and twelve months, respectively, these measurements were repeated.
Results: The clinical performance of maxillary premolars regarding (fracture marginal integrity and
marginal discoloration) over one year, there was no statistically significant difference between the
two groups. Vonlay restorations revealed statistically significantly higher patient satisfaction than
complete onlay restorations in terms of appearance, although all patients were satisfied overall.
Conclusions: Maxillary premolars restored with both complete onlay and vonlay designs using
pressable lithium disilicate ceramic material demonstrated successful clinical performance in terms
of fracture resistance, marginal integrity, marginal discoloration, and patient satisfaction over a oneyear period, with vonlay designs being superior in terms of appearance.