Clinical Evaluation of OBU When Used for Indirect Dental Restorations

Clinical Evaluation of OBU When Used for Indirect Dental Restorations

The device used in the study, Optibond Universal (OBU) is a single component universal dental adhesive intended for direct and indirect dental restorations. OBU is formulated to provide reliable bond strength with any etch technique, on all common substrates and in combination with any resin cement without auxiliary products (silane or metal primers) even in absence of light. OBU is intended for general population use by a dental professional.

OBU contains an acidic component to etch the tooth surface in order to allow the adhesive to mechanically adhere to the prepared tooth surface. The adhesive can be used with light or without light cured prior to application of the restorative material. This allows for the adhesive to mechanically and chemically bond to the applied restorative material. OBU is formulated to provide a reliable bond strength, and it’s compatible with all etching modes (self-etch, selective etch, and total etch).

Aim/Hypothesis/Objective The primary objective of this study is to evaluate the clinical performance of OBU used in the intended clinical conditions.

The device will undergo evaluation in the following categories:

Functional Properties Endodontic posts Ceramic restorations Composite and metal crowns Pretreatment for indirect restorations Core build-ups


Primary endpoints:

Evaluation of clinical safety and performance of OBU, a single component universal dental adhesive intended for indirect dental restorations according to manufacturer’s Instruction For Use.

(Indirect metal restoration is defined as any restoration made of precious or non-precious alloy such as inlays, onlays, porcelain fused to metal, metal full coverage crown, metal full coverage fixed partial denture). All implant restorations are excluded.

Secondary endpoints:

Post-operative sensitivity, retention, general periodontal health, and general optical properties after baseline, 6 months, 1 year and 2 years post-placement.

The hypothesis to be tested is that OBU is safe and effective in clinical settings when the device is used according to manufacturer’s instructions:

H0: P ̂_T-P ̂_C≥ ∆ HA: P ̂_T-P ̂_C< ∆ Where ∆ (delta) refers to the non-inferiority margin set at 10%.

Source: View full study details on

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August 22, 2023Comments | Dental Studies | Oncology Clinical Trials | US National Library of Medicine