The purpose of this study was to evaluate the clinical performance of two placement techniques of resin composite (Horizontal and Mat incremental) using omnichroma in class V carious lesions over 6 months. Materials and methods: A total of 11 patients with two carious cervical lesions participated in this study afterobtaining informed consent. A total of 22 restorations were placed. The distributions of the techniques and the teeth locations were randomized. Cavities were prepared limited to justremoval of carious lesions with incisal and gingival margins in enamel and beveling of incisalcavosurface margin. All cavities for both techniques were restored with omnichromaresin composite following manufacturer’s instructions. Finishingand polishing were performed using finishing stones and polishing discs. Each restoration wasclinically evaluated at baseline (one week),3 months and 6months for retention, margin discolorationand postoperative sensitivity using modified UnitedState public health service (USPHS) criteria. Results The recall rate was 79.6 % after 6 months. Also, the retention rate for all restorations was 100% after6 months. Using χ2-test, there was no statistically significant differences between the tested groupsat all evaluation periods regarding retention, marginal discoloration, and postoperativesensitivity (P > 0.05). Conclusion Within the limitation of this short-term evaluation, there was no significant clinical differencebetween both composite placement techniques. Clinical significances Both horizontal and mat incremental technique achieved excellent results after 6 months of clinical service.