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Table 2 Within-group comparison of masticatory performance and PROMs, before treatment (T0) and 12 months after treatment

From: The performance of two-implant overdentures in the atrophic maxilla: a case series with 1-year follow-up

 

T0

T12

p value

Masticatory performance

   

Mean Mixing Ability Index (SD)

22.1 (2.5)

18.7 (2.4)

0.002§,**

Chewing ability questionnaire

Median total food chewing score [Q1–Q3] (max. 18)

12.5 [12;13.75]

4 [2.25;10]

0.005†,**

Median Soft foods score [Q1–Q3] (max. 6)

2 [1;3]

0 [0;0.75]

0.011†,*

Median tough foods score [Q1–Q3] (max. 6)

5 [4;6]

0.5 [0;3.5]

0.008†,**

Median hard foods score [Q1–Q3] (max. 6)

6 [5.25;6]

4 [2;5]

0.007†,**

Denture complaints questionnaire

Median functional complaints upper denture [Q1–Q3] (max. 27)

16 [14–21]

2 [0–6]

0.003†,**

Median Functional complaints in general [Q1–Q3] (max. 54)

22 [17–31]

1 [0–3]

0.003†,**

Median Facial aesthetics [Q1–Q3] (max. 9)

0 [2–4]

3 [3–9]

0.092

Median “Neutral Space” [Q1–Q3] (max. 9)

1 [1–3]

1 [0–2]

0.058

Median Aesthetics [Q1–Q3] (max. 36)

0 [2–9]

0 [0–1]

0.028†,*

Median General satisfaction score upper denture [Q1–Q3]

3 [1–4]

8 [6–9]

0.003†,**

Oral health impact profile-NL49

Median Functional limitation [Q1–Q3] (max. 36)

20.5 [18–26.5]

4 [0.8–8.8]

0.002†,**

Median Physical pain [Q1–Q3] (max. 36)

16.5 [14.25–22.25]

8 [4.5–11.5]

0.003†,**

Median psychological discomfort [Q1–Q3] (max. 20)

14.0 [7.75–18.25]

4.5 [2.3–8.3]

0.002†,**

Median physical disability [Q1–Q3] (max. 36)

19.5 [15.5–22.75]

3.5 [2.3–9.3]

0.002†,**

Median psychological disability [Q1–Q3] (max. 24)

11.0 [5.8–16.5]

2.5 [0–8]

0.002†,**

Median social disability [Q1–Q3] (max. 20)

8 [0.3–10.8]

2 [1–5.8]

0.044†,*

Median handicap [Q1–Q3] (max. 24)

6.5 [1.5–11.8]

3 [0–4.8]

0.011†,*

Median total OHIP-NL49 score [Q1–Q3] (max. 196)

71.5 [58.5–105]

16.5 [9.3–48.3]

0.002†,**

  1. Q1–Q3: interquartile range; max. = maximal score
  2. *p < 0.05, **p < 0.01, §Paired-Samples T test, Wilcoxon Matched Pairs Signed Ranks test