Direct resin composite restorations for fractured maxillary teeth and diastema closure: A 7 years retrospective evaluation of survival and influencing factors

Abstract

The application of direct RBC restorations provides an excellent treatment option for fractured teeth and for closing diastemas. The overall survival rate was 88.34% up to 10 years. Microhybrid and nanofill RBC restorations showed similar survival rates, however nanofills discolored at a higher rate, meanwhile chipping of the restoration occurred frequently with microhybrids.

Diastema closures: A novel technique to ensure dental proportion

“…Highly esthetic restorations made of composite resins are now possible due to constant improvements in techniques, materials, and technology . One important aspect of composite resins is their capacity of mimic dental enamel, with overall survival rate higher than 88% up to 10 years . On the other hand, the major causes of failure are chipping and color mismatch, which can many times be solved by repairing and polishing …”

“…Midline diastemas are commonly cited by patients as a primary esthetic concern, and are defined as an interdental space greater than 0.5 mm within the maxillary central incisors . Also, diastemas can often be considered as esthetic or malocclusion problem, thus, closing them is commonplace in esthetic dentistry . Once defined their etiology, different treatments can be performed, such as surgery, orthodontics, restorative procedures, or an association within them …”

“…Although ceramics are highly esthetic materials, their treatment needs to be performed in multiple sessions and their cost is significantly superior when compared with composite resin due to the laboratory phase involved; moreover, it often needs intact enamel preparation . In the counterpart, with the fast development of adhesive technology, it became possible to add composites to tooth structures with little‐to‐no cavity preparation, in a minimally or non‐invasive approach …”

“…3 Also, diastemas can often be considered as esthetic or malocclusion problem, 4 thus, closing them is commonplace in esthetic dentistry. 2,[5][6][7] Once defined their etiology, different treatments can be performed, such as surgery, orthodontics, restorative procedures, or an association within them. 2 Orthodontic treatments are frequently indicated, however, for some patients, diastemas remain even after the treatment is finished due to alterations in the dental proportions.…”

“…8 In the counterpart, with the fast development of adhesive technology, it became possible to add composites to tooth structures with little-to-no cavity preparation, in a minimally or non-invasive approach. 6,9,10 In addition, composite resins are materials that can be used for restorations in a single session. However, the major drawback relates to its color stability and possible resin chipping, although different studies have demonstrated a high success rate up to 5-10 years.…”