The effects of buccal contour augmentation, for periodontally compromised teeth with horizontal bone loss, was assessed in this study. 30 subjects were divided into group A (open flap debridement [OFD] with buccal contour augmentation using deproteinized bovine bone mineral [DBBM]), jointly referred to as Contour augmentation for Periodontal Defects (CAPD); and group B (OFD alone). Bleeding on probing (BOP), clinical attachment level (CAL), probing depth (PD), gingival recession (GR), width (WKM) and thickness (TKM) of keratinized mucosa and labial cortical plate thickness were compared at baseline and 1-year. BOP, CAL, PD and GR did not show significant differences. TKM increased by 1.76 mm for group A, while decreased by 1 mm for group B. WKM increased from 2.86 ± 0.4 mm to 3.6 ± 0.71 mm (p<0.001) and 2.93 ± 0.32 mm to 3 ± 0.7 mm (p = 0.5) for groups A and B respectively, which showed a statistical significance. Labial cortical plate thickness increased from 0.94 ± 0.3 mm to 1.95 ± 0.54 mm (p<0.001) for group A, while decreased from 0.87 ± 0.45 mm to 0.68 ± 0.31 mm for group B. Visual analog scale score for pain perception showed no difference between the 2 groups. Contour augmentation (CAPD) with DBBM for periodontally compromised teeth improves WKM and TKM. Long-term analyses are needed to determine its benefits in daily clinical practice.