Experimental adhesive with phosphoric acid in posterior restorations

Change in presence of secondary dental caries will be assessed clinically according to Ryge (1973)* over time.

Assessments will be done to the following criteria:

A= No caries present. D= Caries present associated with the restoration.

*As per the Investigation Protocol, United States Public Health Service (USPHS) direct evaluation procedures were conducted using modified methods reported by Ryge in 1973.

As described by Ryge in 1973, the term "clinical assessment" means a visual examination by a dentist, using a mouth mirror, an explorer, and supplementary lighting as needed.

Note: Secondary caries is a categorical, dichotomous variable, i.e. there is caries or not. This was assessed clinically and radiographically by a trained professional (dentist).

The restoration will be assessed clinically according to Ryge (1973)* for presence of fractures over time.

Assessments will be done to the following criteria:

A= Smooth restoration surface with no irregularities. B= Slightly rough or pitted restoration surface. Can be refinished. C= Deeply pitted or grooved (not related to anatomy) restoration finish. Can not be refinished.

D= Restoration surface is fractured or flaking.

*As per the Investigation Protocol, United States Public Health Service (USPHS) direct evaluation procedures were conducted using modified methods reported by Ryge in 1973.

As described by Ryge in 1973, the term "clinical assessment" means a visual examination by a dentist, using a mouth mirror, an explorer, and supplementary lighting as needed.

Patient will be interviewed to assess post-operative sensitivity according to the following criteria:

A= No sensitivity. B= Mild sensitivity. C= Moderate sensitivity with no restoration replacement required. D= Sever sensitivity. Replacement of restoration is required.

Tooth sensitivity will be assessed at baseline and each follow-up appointment using cold thermal test (Endo-Ice, Hygienic) and Electric Pulp Test (EPT) when indicated.

The change in surface condition of restoration will be assessed clinically according to Ryge (1973)* over time.

Assessments will be done to the following criteria:

A= Restoration is continuous with existing anatomic form. B= Restoration is discontinuous with existing anatomic form but missing material is not sufficient to expose dentin or lining.

C= Sufficient restorative material is lost to expose dentin.

*As per the Investigation Protocol, United States Public Health Service (USPHS) direct evaluation procedures were conducted using modified methods reported by Ryge in 1973.

As described by Ryge in 1973, the term "clinical assessment" means a visual examination by a dentist, using a mouth mirror, an explorer, and supplementary lighting as needed.

Patient's gingiva will be assessed clinically according to Ryge (1973)* over time.

Assessments will be done to the following criteria:

0 = Normal gingiva.

1. = Mild inflammation, slight change in color, slight edema, no bleeding upon probing.

2. = Moderate inflammation, redness; edema and glazing; bleeding upon palpation.

3. = Severe inflammation, marked redness and edema, ulceration, tendency to spontaneous bleeding.

   • As described by Ryge in 1973, the term "clinical assessment" means a visual examination by a dentist, using a mouth mirror, an explorer, and supplementary lighting as needed.

Note: At 6 months data was not reported. At Baseline, all patients presented a score of 0. Any patient with a score greater than zero would have been excluded at baseline.

Patients who received Class I restorations were not assessed as these restorations are limited to the chewing surface and not related to the health of gums.

Marginal discoloration will be assessed clinically according to Ryge (1973)* over time.

Assessments will be done to the following criteria:

Alpha= No visual evidence of marginal discoloration. Bravo= Marginal discoloration present but has not penetrated in a pulpal direction.

Charlie= Marginal discoloration has penetrated in a pulpal direction.

*As per the Investigation Protocol, United States Public Health Service (USPHS) direct evaluation procedures were conducted using modified methods reported by Ryge in 1973.

As described by Ryge in 1973, the term "clinical assessment" means a visual examination by a dentist, using a mouth mirror, an explorer, and supplementary lighting as needed.

This is the total number of participants remaining at the end of the study who completed the 18 month follow-up. 22 participants presented for the 18 month evaluation. Most participants had subject teeth in both arms of the study. The reporting below is on the number of teeth, not subjects.

Change in marginal integrity will be assessed clinically according to Ryge (1973)* over time.

Assessments will be done to the following criteria:

A= Explorer does not catch or slight catch with no visible crevice. B= Explorer catches and crevice is visible but no exposure of dentin or base. C= Explorer penetrates crevice and defect extended to amelo-dentinal junction. D= Restoration is fractured, mobile, or missing in part or in toto.

*As per the Investigation Protocol, United States Public Health Service (USPHS) direct evaluation procedures were conducted using modified methods reported by Ryge in 1973.

As described by Ryge in 1973, the term "clinical assessment" means a visual examination by a dentist, using a mouth mirror, an explorer, and supplementary lighting as needed.

This is the total number of participants remaining at the end of the study who completed the 18 month follow-up. 22 participants presented for the 18 month evaluation. Most participants had subject teeth in both arms of the study. The reporting below is on the number of teeth, not subjects.

Change in presence of secondary dental caries will be assessed clinically according to Ryge (1973)* over time.

Assessments will be done to the following criteria:

A= No caries present. D= Caries present associated with the restoration.

*As per the Investigation Protocol, United States Public Health Service (USPHS) direct evaluation procedures were conducted using modified methods reported by Ryge in 1973.

As described by Ryge in 1973, the term "clinical assessment" means a visual examination by a dentist, using a mouth mirror, an explorer, and supplementary lighting as needed.

Note: Secondary caries is a categorical, dichotomous variable, i.e. there is caries or not. This was assessed clinically and radiographically by a trained professional (dentist).

This is the total number of participants remaining at the end of the study who completed the 18 month follow-up. 22 participants presented for the 18 month evaluation. Most participants had subject teeth in both arms of the study. The reporting below is on the number of teeth, not subjects.

The restoration will be assessed clinically according to Ryge (1973)* for presence of fractures over time.

Assessments will be done to the following criteria:

A= Smooth restoration surface with no irregularities. B= Slightly rough or pitted restoration surface. Can be refinished. C= Deeply pitted or grooved (not related to anatomy) restoration finish. Can not be refinished.

D= Restoration surface is fractured or flaking.

*As per the Investigation Protocol, United States Public Health Service (USPHS) direct evaluation procedures were conducted using modified methods reported by Ryge in 1973.

As described by Ryge in 1973, the term "clinical assessment" means a visual examination by a dentist, using a mouth mirror, an explorer, and supplementary lighting as needed.

This is the total number of participants remaining at the end of the study who completed the 18 month follow-up. 22 participants presented for the 18 month evaluation. Most participants had subject teeth in both arms of the study. The reporting below is on the number of teeth, not subjects.

Patient will be interviewed to assess post-operative sensitivity according to the following criteria:

A= No sensitivity. B= Mild sensitivity. C= Moderate sensitivity with no restoration replacement required. D= Sever sensitivity. Replacement of restoration is required.

Tooth sensitivity will be assessed at baseline and each follow-up appointment using cold thermal test (Endo-Ice, Hygienic) and Electric Pulp Test (EPT) when indicated.

This is the total number of participants remaining at the end of the study who completed the 18 month follow-up. 22 participants presented for the 18 month evaluation. Most participants had subject teeth in both arms of the study. The reporting below is on the number of teeth, not subjects.

The change in surface condition of restoration will be assessed clinically according to Ryge (1973)* over time.

Assessments will be done to the following criteria:

A= Restoration is continuous with existing anatomic form. B= Restoration is discontinuous with existing anatomic form but missing material is not sufficient to expose dentin or lining.

C= Sufficient restorative material is lost to expose dentin.

*As per the Investigation Protocol, United States Public Health Service (USPHS) direct evaluation procedures were conducted using modified methods reported by Ryge in 1973.

As described by Ryge in 1973, the term "clinical assessment" means a visual examination by a dentist, using a mouth mirror, an explorer, and supplementary lighting as needed.

This is the total number of participants remaining at the end of the study who completed the 18 month follow-up. 22 participants presented for the 18 month evaluation. Most participants had subject teeth in both arms of the study. The reporting below is on the number of teeth, not subjects.

Patient's gingiva will be assessed clinically according to Ryge (1973)* over time.

Assessments will be done to the following criteria:

0 = Normal gingiva.

1. = Mild inflammation, slight change in color, slight edema, no bleeding upon probing.

2. = Moderate inflammation, redness; edema and glazing; bleeding upon palpation.

3. = Severe inflammation, marked redness and edema, ulceration, tendency to spontaneous bleeding.

   • As described by Ryge in 1973, the term "clinical assessment" means a visual examination by a dentist, using a mouth mirror, an explorer, and supplementary lighting as needed.

Note: At 6 months data was not reported. At Baseline, all patients presented a score of 0. Any patient with a score greater than zero would have been excluded at baseline.

Patients who received Class I restorations were not assessed as these restorations are limited to the chewing surface and not related to the health of gums.

This is the total number of participants remaining at the end of the study who completed the 18 month follow-up. 22 participants presented for the 18 month evaluation. Most participants had subject teeth in both arms of the study. The reporting below is on the number of teeth, not subjects. Twenty-two (22) of the restorations were Class I and have no interaction with the gingival tissue and therefore were not scored. Scores below are for the remaining 42 Class II restorations.