| Summary: | Water with high hardness has high calcium content. Calcium is an
inorganic substance which is a main component of calculus formation. Children
lives in an area of high water hardness and consumes it daily has a bigger chance
of calculus accumulation in a tooth surface. Dental plaque is a main factor cause
of gingivitis. Calculus can increase plaque retention in a tooth surface. The
presence of calculus deposit, debris, and plaque in a tooth surface can affect oral
hygiene status and gingival health. The purpose of this study was to find out the
difference of oral hygiene status and gingival health in children living in an area
with high water hardness and low water hardness.
This study was performed at 71 students of SDN Kepuh as a high water
hardness consumer and 88 students of SDN 2 Kanoman as a low water hardness
consumer in Kecamatan Panjatan. Oral hygiene status was assessed using OHI-S
measurement while gingival health was assessed using Gingival Index. The score
difference of OHI-S and GI between two groups was then analyzed using Mann
Whitney test.
The result of this study showed a significance difference (p<0,05) of oral
hygiene status between children in an area of high water hardness and low water
hardness. Oral hygiene status of children in an area of high water hardness was
worse compared with children in an area of low water hardness. Meanwhile there
was no significance difference (p>0,05) in gingival index between both groups.
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