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Progress in Orthodontics

Table 4 Comparison of clinical indices between two study groups at baseline and after 6 months in mandibular arch

From: Clinical and radiographic comparison of the effects of two types of fixed retainers on periodontium - A randomized clinical trial

Variable measured

FRC baseline

FRC 6 months

Plaque index

SW 6 months

-

0.001*

SW baseline

0.62

-

Gingival index

SW 6 months

-

0.000*

SW baseline

0.53

-

Calculus index

SW 6 months

-

0.35

SW baseline

074

-

Bleeding on probing

SW 6 months

-

0.07

SW baseline

0.86

-

  1. SW, spiral wire group; FRC, fiber-reinforced composite group.
  2. *, statistically significant.
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