IADR Abstract Archives
A Novel Photometric Method to Measure Changes in Gingival Color in Response to Periodontal Surgery
Objectives: The aim of this retrospective study was to photometrically assess the influence of periodontal surgery on the soft tissue healing represented by the gingival color.
Methods: This is a retrospective study. Data of 43 patients treated surgically in the Department of Periodontology, School of Graduate Dentistry, Rambam Health Care Campus, Haifa, Israel from 2005 to 2009 was collected. Clinical data including pocket depth (PD), recession (REC), clinical attachment level (CAL), gingival index (GI), plaque index (PI), bleeding on probing (BOP), and digital clinical photographs was taken from patient's file.
For each surgical site two digital clinical images were taken, before and 3 months after the surgical treatment. For each clinical photograph tissue band containing attached gingiva including the mesial and distal papilla was selected (Fig. 1,2). An average color was calculated from the selected area using computer software. Color data was expressed in terms of L*, a*, and b* values by the CIELAB color space.
Mean values and standard deviations were calculated for all continuous variables. Within-group comparisons of mean PI, BOP, CAL, GI, and PD values, pre-surgery, and 3 months post-surgery were analyzed by the non-parametric Mann– Whitney U test. For differences among delta L, a, and b values, the Mann–Whitney U test was used.
Results: Clinical Photographs of before and 3 months after the surgical treatment were taken from 55 sites in 43 patients (40% Males, 60% Females, Average age: 43). Significant reduction in mean PD, REC and CAL was found 3 months after periodontal surgery (P <0.05). On the contrary, no significant differences were found in GI, PI, and BOP.
Digital clinical image analysis yielded a statistically significant reduction in the a-value (On the a-axis positive values indicate higher amounts of red) (29.1 to 27.1, p-value =0.04). Changes in b and L values did not reach statistically significant.
Conclusions: Photometric CIELAB analysis can be used as a method to assess the response of the soft tissue to periodontal surgery.
Methods: This is a retrospective study. Data of 43 patients treated surgically in the Department of Periodontology, School of Graduate Dentistry, Rambam Health Care Campus, Haifa, Israel from 2005 to 2009 was collected. Clinical data including pocket depth (PD), recession (REC), clinical attachment level (CAL), gingival index (GI), plaque index (PI), bleeding on probing (BOP), and digital clinical photographs was taken from patient's file.
For each surgical site two digital clinical images were taken, before and 3 months after the surgical treatment. For each clinical photograph tissue band containing attached gingiva including the mesial and distal papilla was selected (Fig. 1,2). An average color was calculated from the selected area using computer software. Color data was expressed in terms of L*, a*, and b* values by the CIELAB color space.
Mean values and standard deviations were calculated for all continuous variables. Within-group comparisons of mean PI, BOP, CAL, GI, and PD values, pre-surgery, and 3 months post-surgery were analyzed by the non-parametric Mann– Whitney U test. For differences among delta L, a, and b values, the Mann–Whitney U test was used.
Results: Clinical Photographs of before and 3 months after the surgical treatment were taken from 55 sites in 43 patients (40% Males, 60% Females, Average age: 43). Significant reduction in mean PD, REC and CAL was found 3 months after periodontal surgery (P <0.05). On the contrary, no significant differences were found in GI, PI, and BOP.
Digital clinical image analysis yielded a statistically significant reduction in the a-value (On the a-axis positive values indicate higher amounts of red) (29.1 to 27.1, p-value =0.04). Changes in b and L values did not reach statistically significant.
Conclusions: Photometric CIELAB analysis can be used as a method to assess the response of the soft tissue to periodontal surgery.
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