Abstract
Aim
It is the aim of this paper to present data on the survival of glass ionomer restorations by analysis of the time to re-intervention on the restorations and time to extraction of the restored tooth, and to discuss the factors which may influence this.
Methods
This study examined the recorded intervals between placing a glass ionomer restoration and re-intervention on the tooth, this being obtained from a data set consisting of General Dental Services' (GDS) patients treated in the GDS of England and Wales between 1990 and 2006. The data consist of items obtained from the payment claims submitted by GDS dentists to the Dental Practice Board (DPB) in Eastbourne, Sussex, UK.
Results
Data for more than three million different patients and more than 25 million courses of treatment were included in the analysis. Included were all records for adults (aged 18 or over at date of acceptance). Overall, 1,592,566 glass ionomer restorations were included, of which 711,581 had a re-intervention over the duration of the dataset. The Kaplan-Meier analysis indicated that 28% had survived without re-intervention at 15 years. When glass ionomer restorations are compared with the survival curves for other types of restoration, it is apparent that these restorations perform less well in terms of time to re-intervention than other treatment groups overall. They also perform less favourably in the charts dealing with time to extraction, with 23% of teeth restored with GI being extracted at 15 years.
Conclusions
The survival of glass ionomer restorations to re-intervention and in time to extraction of the restored tooth was found to be less good than other restoration types. This was particularly influenced by the age of the patient and the position of the restored tooth in the mouth.
It is the aim of this paper to present data on the survival of glass ionomer restorations by analysis of the time to re-intervention on the restorations and time to extraction of the restored tooth, and to discuss the factors which may influence this.
Methods
This study examined the recorded intervals between placing a glass ionomer restoration and re-intervention on the tooth, this being obtained from a data set consisting of General Dental Services' (GDS) patients treated in the GDS of England and Wales between 1990 and 2006. The data consist of items obtained from the payment claims submitted by GDS dentists to the Dental Practice Board (DPB) in Eastbourne, Sussex, UK.
Results
Data for more than three million different patients and more than 25 million courses of treatment were included in the analysis. Included were all records for adults (aged 18 or over at date of acceptance). Overall, 1,592,566 glass ionomer restorations were included, of which 711,581 had a re-intervention over the duration of the dataset. The Kaplan-Meier analysis indicated that 28% had survived without re-intervention at 15 years. When glass ionomer restorations are compared with the survival curves for other types of restoration, it is apparent that these restorations perform less well in terms of time to re-intervention than other treatment groups overall. They also perform less favourably in the charts dealing with time to extraction, with 23% of teeth restored with GI being extracted at 15 years.
Conclusions
The survival of glass ionomer restorations to re-intervention and in time to extraction of the restored tooth was found to be less good than other restoration types. This was particularly influenced by the age of the patient and the position of the restored tooth in the mouth.
| Original language | English |
|---|---|
| Pages (from-to) | 865-874 |
| Number of pages | 10 |
| Journal | British Dental Journal |
| Volume | 224 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 8 Jun 2018 |