div class=trans-pagebuttonPage 1button div class=trans-image a href=https:reader043fdocumentsnetreader043viewer20220307195b03fe687f8b9a2e228d2c4dhtml5page1jpg target=_blank amp-img class=trans-thumb alt=Page 1: · molecules and negatively charged hydroxide ions Hydroxyapatite is also present in the human saliva — but broken that get on the teeth with the toothpaste src=https:reader043fdocumentsnetreader043viewer20220307195b03fe687f8b9a2e228d2c4dhtml5thumbnails1jpg width=142 height=106 layout=responsive amp-imga divdivdiv class=trans-pagebuttonPage 2button div class=trans-image a href=https:reader043fdocumentsnetreader043viewer20220307195b03fe687f8b9a2e228d2c4dhtml5page2jpg target=_blank amp-img class=trans-thumb alt=Page 2: · molecules and negatively charged hydroxide ions Hydroxyapatite is also present in the human saliva — but broken that get on the teeth with the toothpaste src=https:reader043fdocumentsnetreader043viewer20220307195b03fe687f8b9a2e228d2c4dhtml5thumbnails2jpg width=142 height=106 layout=responsive amp-imga divdivdiv class=trans-pagebuttonPage 3button div class=trans-image a href=https:reader043fdocumentsnetreader043viewer20220307195b03fe687f8b9a2e228d2c4dhtml5page3jpg target=_blank amp-img class=trans-thumb alt=Page 3: · molecules and negatively charged hydroxide ions Hydroxyapatite is also present in the human saliva — but broken that get on the teeth with the toothpaste src=https:reader043fdocumentsnetreader043viewer20220307195b03fe687f8b9a2e228d2c4dhtml5thumbnails3jpg width=142 height=106 layout=responsive amp-imga divdivdiv class=trans-pagebuttonPage 4button div class=trans-image a href=https:reader043fdocumentsnetreader043viewer20220307195b03fe687f8b9a2e228d2c4dhtml5page4jpg target=_blank amp-img class=trans-thumb alt=Page 4: · molecules and negatively charged hydroxide ions Hydroxyapatite is also present in the human saliva — but broken that get on the teeth with the toothpaste...