Archives of Current Research International

Aims: Cervical margin relocation (CMR) is a restorative technique that repositions subgingival margins to a supragingival level using a matrix and composite resin. It offers a less invasive alternative to surgical crown lengthening. This study aimed to conduct a narrative review of the literature on how periodontal conditions were investigated in CMR procedures and their impact on periodontal tissues.

Materials and Methods: A search was conducted in PubMed, CAPES-indexed journals, and Lilacs using the descriptors “cervical margin relocation,” “deep margin elevation,” “subgingival cervical margin,” “periodontal health,” and “periodontium,” combined with Boolean operators. Thirteen articles were retrieved; after removing duplicates and screening, eight clinical studies published in the last 10 years in Portuguese, English, or Spanish were included.

Results: Six studies assessed periodontal parameters such as plaque index (PI), bleeding on probing (BOP), gingival index (GI), and probing depth (PD). No significant differences were observed in PI and GI between CMR and control groups. However, two studies reported increased BOP, and one reported higher PD after CMR. Findings highlight the importance of avoiding biological width invasion to prevent inflammatory responses.

Conclusion: Available studies indicate that CMR is not associated with worsening periodontal plaque and inflammation indices. When biological principles of the periodontium are respected, CMR represents a promising alternative to surgical crown lengthening, ensuring favorable clinical outcomes.