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Table 4 Summary of studies reporting on occluding pairs

From: Tooth loss and oral health-related quality of life: a systematic review and meta-analysis

First author, year Population, sample n, (% females) Subject of the study Main outcomes regarding occluding pairs
OHIP-49 (Oral Health Impact Profile)
Baba, 2008aCS [20] Baba, 2008bCS [21] Japanese adults with shortened dental arches n = 155 (70) Relationship between shortened dental arches and OHRQoL a: Dose response relationship between number of missing posterior teeth and OHRQoL in subjects with shortened dental arches. Missing posterior units is related to impairment of OHRQoL. b: Patterns of missing occluding units likely to be related to the OHRQoL impairment in shortened dental arch subjects with the presence of first molar contact having a particularly important role.
Hassel,2006CS [23] German institutionalized elderly n = 159 (81) Dental and non-dental factors on OHRQoL of institutionalized elderly Less teeth in static occlusion related to impairment of OHRQoL.
Locker, 1994LT [29] Canadian older adults n = 312 (54) Clinical and subjective indicators of oral health status and OHRQoL Having fewer functional units associated with impairment of OHRQoL.
GOHAI (Geriatric Oral Health Assessment Index)
Mesas, 2008CS [37] Brazilian urban elderly n = 267 (60) Dental and non-dental factors on OHRQoL Absence of posterior occlusion associated with impairment of OHRQoL but only statistically significant for 'physical' dimension and not for the 'social' and 'worry' dimensions.
Swoboda, 2006CS [44] American low income elderly n = 733 (56) Dental and non-dental predictors on OHRQoL OHRQoL positively related to the total number of occluding pairs, molar pairs occluding, anterior pairs occluding, and premolar pairs occluding.
OIDP (Oral Impact on Daily Performance)
Tsakos, 2006CS [5] British non-institutionalized elderly (subsample of Sheiham, 2001) n = 736 (48) Clinical correlates of OHRQoL OHRQoL significantly related to the total number of occluding pairs and to the number of anterior occluding pairs but not to the number of posterior occluding pairs.
Tsakos, 2004CS [45] Greek non-institutionalized elderly n = 448 (64) Relationship between clinical dental measures and OHRQoL OHRQoL significantly related to the total number of occluding pairs and to the number of posterior occluding pairs.
Ad hoc satisfaction questionnaires  
Leake, 1994CS [27] American and Canadian older adults n = 338 (55) Assessment of relationship between oral function and posterior dental units Low number of posterior units was associated with embarrassment and dissatisfaction on chewing and appearance, indicating OHRQoL impairment.
Meeuwissen, 1995CS [36] Dutch dentate older adults n = 320 (59) Satisfaction with reduced dentitions Fewer posterior occluding units associated with lower satisfaction scores, indicating OHRQoL impairment.
  1. CS = cross-sectional study; LT = longitudinal study; CO = cohort study; VA = validation study