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Prospective clinical study of bilateral balanced occlusion (BBO) versus canine-guided occlusion (CGO) in complete denture wearers

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Abstract

Objectives

Previous studies have often discussed occlusal concepts for complete dentures without formulating a recommendation. Various options are available, the most common ones being canine-guided occlusion (CGO) and bilateral balanced occlusion (BBO). We designed a prospective randomized study to compare these two schemes with the goal of formulating a recommendation.

Materials and methods

Forty patients could be evaluated. In a crossover design, they were randomized to a CGO>BBO group and a BBO>CGO group, each starting out by wearing their dentures with the first occlusal scheme for 3 months, followed by a first investigator- and patient-centered assessment. Then, each patient was transitioned to the other occlusal scheme by replacing the denture setup in the dental laboratory, followed by another 3 months of intraoral use and a second assessment. Wilcoxon–Mann–Whitney and marginal homogeneity tests were used for statistical analysis.

Results

All statistically significant differences favored the CGO concept. Based on patient ratings, the CGO>BBO group preferred its esthetics (p = 0.02) and the BBO>CGO group its mandibular retention (p = 0.05), phonetics (p = 0.03), and masticatory function (p = 0.01). Based on investigator assessments, maxillary denture retention was found to significantly improve among the BBO>CGO patients after transition to CGO (p = 0.01).

Conclusions

Within the limitations of this study, canine guidance can be recommended as a comfortable alternative to bilateral balanced occlusion for complete dentures.

Clinical relevance

This recommendation can reduce the time requirements for the fabrication of complete dentures in dental laboratories.

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Authors and Affiliations

  1. Department of Prosthodontics, Center for Dentistry and Oral Medicine (Carolinum), Johann Wolfgang Goethe University Frankfurt, Theodor-Stern-Kai 7, Building 29, 60596, Frankfurt, Germany

    Silvia Brandt & Hans-Christoph Lauer

  2. Department of Prosthodontics, School of Dentistry, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany

    Regina Danielczak

  3. Center for Dentistry and Oral Medicine, Julius Maximilian University Würzburg, Pleicherwall 2, 97080, Würzburg, Germany

    Anna Kunzmann

  4. Private Practice, Taunusstein, Germany

    Miriam Molzberger

Authors
  1. Silvia Brandt
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  2. Regina Danielczak
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  3. Anna Kunzmann
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  4. Hans-Christoph Lauer
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  5. Miriam Molzberger
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Corresponding author

Correspondence to Silvia Brandt.

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Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

As human subjects were examined in the present study, formal approval of its design was obtained in advance from the institutional review board at Johann Wolfgang Goethe University Medical School (reference no. 215/06). All study procedures adhered to the ethical standards of the institutional research committee, the 1964 Helsinki declaration and its later amendments, or any similar ethical standards.

Informed consent

Informed consent was obtained from each of the patients included in the study.

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Brandt, S., Danielczak, R., Kunzmann, A. et al. Prospective clinical study of bilateral balanced occlusion (BBO) versus canine-guided occlusion (CGO) in complete denture wearers. Clin Oral Invest 23, 4181–4188 (2019). https://doi.org/10.1007/s00784-019-02857-5

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  • DOI: https://doi.org/10.1007/s00784-019-02857-5

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