Evaluation Of the BEAUTIBOND XTREME Adhesive in Class I and II Restorations: One-Year Results.

A Randomized Prospective Clinical Study Evaluating the Effectiveness of the BEAUTIBOND XTREME Adhesive System Using Different Bonding Techniques in Class I and II Restorations: One-Year Results.

This randomized clinical trial aimed to evaluate the performance of the Beautibond Xtreme adhesive system under different bonding techniques. Patients over 18 years old with restorative needs were selected, and 152 teeth were randomized using the "Research Randomizer Program" for allocation into control groups (CI - Class I restoration with total-etch conditioning; CII - Class II restoration with total-etch conditioning) and test groups (TI - Class I restoration in self-etch mode; TII - Class II restoration in self-etch mode; TIII - Class I restoration with selective enamel etching; TIV - Class II restoration with selective enamel etching). The restorations were evaluated (USPHS criteria) regarding anatomy, integrity, marginal staining, color, roughness, secondary caries lesions, postoperative sensitivity, and retention. Two calibrated examiners (Kappa test 0.84), blinded to the treatments, conducted evaluations for up to one year.

Inclusion Criteria:

• Adults aged 18 years or older
• Occlusal stability supported by molars, Presence of at least one premolar or one molar with Class I/II cavities suitable for direct restoration or restoration replacement
• Ability to attend evaluation and regular maintenance appointments
• No clinical symptoms or radiographic signs suggesting pulp involvement
• No periodontal pockets or compromised biological space invasion
• Ability to perform absolute isolation of the operative field and subsequent restoration of the cavity with composite resin
• Active carious lesion
• Occlusal/occlusoproximal surface of molars and premolars, with a radiographic image showing shallow, medium, or deep dentin involvement, which is preventing the patient from effectively controlling bacterial biofilm, or showing some type of sensitivity
• Cavity preparation margins (cavosurface) in enamel or dentin.

Exclusion Criteria:

• Poor oral hygiene control
• Patients undergoing orthodontic treatment
• Pregnant or lactating women
• Oral complications such as: bruxism, other parafunctional habits reinforcing the diagnosis of TMD (temporomandibular disorders), periodontal problems
• Pregnant or breastfeeding women
• Presence of uncontrolled systemic diseases
• Patients at high risk for caries.