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clinical evaluation of the effect of preheating BIS-GMA free resin composite at different temperatures on temperature change of the pulpal floor and restorations and compare it with BIS-GMA containing resin composite.
Hypothesis: Could the preheated composite affect the temperature of the pulpal floor
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Admira 50º C | Active Comparator | in this subgroup the patient's teeth was restored with Admira fusion extra resin composite preheated to 50º C |
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| Admira 70º C | Active Comparator | in this subgroup the patient's teeth was restored with Admira fusion extra resin composite preheated to 70º C |
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| Viscalor 50º C | Active Comparator | in this subgroup the patient's teeth was restored with Viscalor resin composite preheated to 50º C |
|
| Viscalor 70º C | Active Comparator | in this subgroup the patient's teeth was restored with Viscalor resin composite preheated to 70º C |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| preheating of resin composite | Other | evaluate the effect of preheating BIS-GMA free resin composite at different temperatures on temperature change of the pulpal floor and restorations and compare it with BIS-GMA containing resin composite. |
| Measure | Description | Time Frame |
|---|---|---|
| pulpal floor temperature and restoration temperature | evaluation the effect of preheating BIS GMA free resin composite at different temperature on temperature change of pulpal floor and restoration and compare it with BIS GMA containing resin composite All readings were taken with the presence of a rubber dam and recorded in Celsius (°C). Five temperature readings were measured for each tooth; (C0): pulpal floor temperature before beginning the restorative procedure. (C1): pulpal floor temperature during placement of preheated composite. (C2): top composite surface after packing and before curing. (C3): pulpal floor temperature after curing of the preheated composite. (C4): top composite surface after curing. The pulpal floor and the restoration temperature of each tooth was measured by a K-type temperature Probe attached to portable mini type thermometer device | one year |
| Measure | Description | Time Frame |
|---|---|---|
| The effect of different preheating temperatures on restoration temperature and pulpal floor temperature | Five temperature readings were measured for each tooth; (C0): pulpal floor temperature before beginning the restorative procedure. (C1): pulpal floor temperature during placement of preheated composite. (C2): top composite surface after packing and before curing. (C3): pulpal floor temperature after curing of the preheated composite. (C4): top composite surface after curing. The pulpal floor and the restoration temperature of each tooth was measured by a K-type temperature Probe attached to portable mini type thermometer device |
| Measure | Description | Time Frame |
|---|---|---|
| The difference in restoration and pulpal floor temperatures before and after curing of preheated resin composite | Five temperature readings were measured for each tooth; (C0): pulpal floor temperature before beginning the restorative procedure. (C1): pulpal floor temperature during placement of preheated composite. (C2): top composite surface after packing and before curing. (C3): pulpal floor temperature after curing of the preheated composite. (C4): top composite surface after curing. The pulpal floor and the restoration temperature of each tooth was measured by a K-type temperature Probe attached to portable mini type thermometer device |
Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Mona I Riad, Professor | Professor at Faculty of Dentistry Cairo University | Study Director |
| Nermin A Mahmoud, Lecturer | Lecturer at Faculty of Dentistry Minia University | Study Director |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Faculty of Dentistry - Minia University | Minya | 61519 | Egypt |
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Forty posterior teeth were randomly divided into two groups of 20 teeth. According to types of restorative materials used (A), the first group was restored by Bis-GMA free resin composite (A1) and the second group was restored by Bis-GMA containing resin composite (A2).
Each group was subdivided into 2 subgroups of 10 teeth each according to preheating temperatures used (T), the first subgroup (T1) was preheated at 50◦ C and the second subgroup (T2) was preheated at 70◦ C.
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| one year |
| one year |