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result sql = Influence of different vehicles on the pH of calcium hydroxide pastes.
Influence of different vehicles on the pH of calcium hydroxide pastes.
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char = i;code = 105
char = o;code = 111
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char = ;code = 32
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char = o;code = 111
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char = o;code = 111
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char = a;code = 97
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char = d;code = 100
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char = o;code = 111
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char = o;code = 111
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char = h;code = 104
char = l;code = 108
char = o;code = 111
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char = p;code = 112
char = h;code = 104
char = e;code = 101
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char = o;code = 111
char = l;code = 108
char = -;code = 45
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char = r;code = 114
char = o;code = 111
char = p;code = 112
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char = l;code = 108
char = e;code = 101
char = n;code = 110
char = e;code = 101
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char = g;code = 103
char = l;code = 108
char = y;code = 121
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char = o;code = 111
char = l;code = 108
char = ;code = 32
char = w;code = 119
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char = r;code = 114
char = e;code = 101
char = ;code = 32
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char = g;code = 103
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char = f;code = 102
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char = c;code = 99
char = a;code = 97
char = n;code = 110
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char = l;code = 108
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char = h;code = 104
char = e;code = 101
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char = i;code = 105
char = n;code = 110
char = ;code = 32
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char = i;code = 105
char = t;code = 116
char = r;code = 114
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char = ;code = 32
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char = h;code = 104
char = e;code = 101
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char = t;code = 116
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char = o;code = 111
char = f;code = 102
char = ;code = 32
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char = h;code = 104
char = i;code = 105
char = c;code = 99
char = l;code = 108
char = e;code = 101
char = ;code = 32
char = w;code = 119
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = s;code = 115
char = h;code = 104
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char = w;code = 119
char = n;code = 110
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = f;code = 102
char = l;code = 108
char = u;code = 117
char = e;code = 101
char = n;code = 110
char = c;code = 99
char = e;code = 101
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = f;code = 102
char = i;code = 105
char = n;code = 110
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = p;code = 112
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char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
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char = h;code = 104
char = e;code = 101
char = ;code = 32
char = p;code = 112
char = a;code = 97
char = s;code = 115
char = t;code = 116
char = e;code = 101
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char = .;code = 46
char = ;code = 32
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char = v;code = 118
char = e;code = 101
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char = ;code = 32
char = t;code = 116
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char = e;code = 101
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char = a;code = 97
char = l;code = 108
char = i;code = 105
char = n;code = 110
char = i;code = 105
char = t;code = 116
char = y;code = 121
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char = o;code = 111
char = f;code = 102
char = ;code = 32
char = a;code = 97
char = l;code = 108
char = l;code = 108
char = ;code = 32
char = p;code = 112
char = a;code = 97
char = s;code = 115
char = t;code = 116
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = w;code = 119
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = m;code = 109
char = a;code = 97
char = i;code = 105
char = n;code = 110
char = t;code = 116
char = a;code = 97
char = i;code = 105
char = n;code = 110
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = o;code = 111
char = v;code = 118
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = t;code = 116
char = i;code = 105
char = m;code = 109
char = e;code = 101
char = ;code = 32
char = u;code = 117
char = n;code = 110
char = d;code = 100
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = e;code = 101
char = x;code = 120
char = p;code = 112
char = e;code = 101
char = r;code = 114
char = i;code = 105
char = m;code = 109
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = d;code = 100
char = i;code = 105
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
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result sql = The main known benefit of calcium hydroxide as an intracanal medicament lies in the bactericidal effect conferred by its pH. The objective of this work was to determine the influence of the vehicle on the pH of calcium hydroxide pastes after usage in patients and in vitro. The incisor root canals of 180 patients were instrumented and filled with calcium hydroxide pastes containing distilled water, chlorhexidine, propylene glycol, anesthetic solution, camphorated p-monochlorophenol and camphorated p-monochlorophenol-propylene glycol. The pH of the paste in the patients' root canals was measured at 7, 14 and 21 days. Similarly, pH was measured in vitro up to 21 days. The pH of all the pastes remained constant throughout the time periods assessed. The calcium hydroxide-water combination showed significantly higher pH values than the other pastes in clinical use. Comparative analysis showed that the pH values of the anesthetic solution, camphorated p-monochlorophenol and camphorated p-monochlorophenol-propylene glycol were significantly higher in vitro. The type of vehicle was shown to influence the final pH of the pastes. However, the alkalinity of all pastes was maintained over time under the experimental conditions.

Publication: J Oral Sci 2004 Jun ;46(2)::107-11.
Publication Date: 2004 Jun
Study Author(s): Pacios, María Gabriela;de la Casa, María Luisa;de Bulacio, María los Angeles;López, María Elena;
Institution: Cátedra de Química Biológica, Facultad de Odontología, Universidad Nacional de Tucumán, San Miguel de Tucumán, Argentina.
Shortcut link to this study:
The main known benefit of calcium hydroxide as an intracanal medicament lies in the bactericidal effect conferred by its pH. The objective of this work was to determine the influence of the vehicle on the pH of calcium hydroxide pastes after usage in patients and in vitro. The incisor root canals of 180 patients were instrumented and filled with calcium hydroxide pastes containing distilled water, chlorhexidine, propylene glycol, anesthetic solution, camphorated p-monochlorophenol and camphorated p-monochlorophenol-propylene glycol. The pH of the paste in the patients' root canals was measured at 7, 14 and 21 days. Similarly, pH was measured in vitro up to 21 days. The pH of all the pastes remained constant throughout the time periods assessed. The calcium hydroxide-water combination showed significantly higher pH values than the other pastes in clinical use. Comparative analysis showed that the pH values of the anesthetic solution, camphorated p-monochlorophenol and camphorated p-monochlorophenol-propylene glycol were significantly higher in vitro. The type of vehicle was shown to influence the final pH of the pastes. However, the alkalinity of all pastes was maintained over time under the experimental conditions.
PMID: 15287544

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