Effect of ridge preservation at molar extraction sites with severe periodontitis on the Schneiderian membrane thickness changes: a pilot study

Table 4 MT obtained at nine measurements in thickened MT test groups (n = 12) and thickened MT control groups (n = 7) and mean changes from pre-extraction to 6 months post-extraction (mm)

Groups	Mesial			Central			Distal
Groups	A1	M1	P1	A2	M2	P2	A3	M3	P3
Pre-extraction
Thickened test
Median	2.89	4.17	2.56	3.02	4.11	2.99	3.17	4.59	2.57
Range	1.31–9.87	2.26–12.74	1.53–9.77	0.45–5.50	1.81–10.26	0.80–10.47	0.91–4.68	2.01–9.65	0.86–5.52
Thickened control
Median	2.90	4.91	4.16	4.08	6.92	3.03	4.38	7.55	2.65
Range	2.10–6.87	4.31–8.45	0.41–9.28	2.07–8.48	3.86–12.59	0.41–9.05	1.73–8.72	0.18–12.5	0.25–10.3
P value	0.827	0.079	1.000	0.803	0.134	1.000	0.248	0.566	0.526
Post-extraction
Thickened test
Median	1.27	1.72	1.68	1.06	2.37	1.11	1.13	1.71	0.85
Range	0.79–2.72	0.76–4.18	0.91–4.50	0.23–3.53	0.65–3.16	0.26–3.21	0.25–2.90	0.76–3.88	0.59–1.48
Thickened control
Median	0.86	2.21	1.13	1.27	3.00	1.64	1.51	2.49	1.51
Range	0.64–3.24	1.08–6.37	0.26–2.77	0.81–3.01	0.80–5.41	0.18–5.74	0.70–1.96	0.20–5.52	0.41–2.57
P value	0.441	0.510	0.115	0.717	0.322	0.354	0.732	0.536	0.582
Changes (mean ± SD)
Thickened test
Median	1.47	2.25	0.68	1.64	3.51	3.95	1.47	3.98	1.85
Range	0.41–8.6	1.05–8.56	0.27–8.02	0.13–5.27	2.54–7.22	0.69–8.45	0.10–3.06	1.19–6.07	0.94–4.04
Thickened control
Median	2.00	3.23	1.39	1.07	3.06	1.49	2.42	2.72	1.14
Range	0.55–5.12	0.18–6.24	0.15–8.15	0.75–7.67	1.64–9.59	0.10–7.35	0.83–6.90	0.02–8.17	0.16–8.36
P value	0.510	1.000	0.320	0.674	0.533	0.743	0.439	0.935	0.661

ISSN: 1472-6831