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International Poster Journal of Dentistry and Oral Medicine



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Int Poster J Dent Oral Med 9 (2007), Nr. 2     15. Juni 2007

Int Poster J Dent Oral Med 2007, Vol 9 No 02, Poster 367

Survival Of Furcation-Involved Molars After Resective Treatment

Language: English

Authors: Dr. Isabel Simon, PD Dr. Dr. Ti-Sun Kim,
Section of Periodontology, Department of Conservative Dentistry, Clinic for Oral, Dental and Maxillofacial Diseases, University Hospital Heidelberg

29.06. - 01.07.2006


The aim of this retrospective case series was to describe the clinical outcome of furcation-involved teeth that underwent resective therapy.

Material and Methods


  • 11 patients (6 females; mean age 53 years)
  • All patients underwent active (antiinfectious and corrective) periodontal therapy at the Section of Periodontology of the Department of Conservative Dentistry of the University Hospital of Heidelberg and took part in regular supportive periodontal therapy (SPT)
  • 15 teeth (1 upper premolar, 12 upper molars and 2 lower molars) with advanced furcation involvement (grade II and III)

Furcation involvement

  • The measurements were done with a curved, scaled Nabers probe (Q 2N [SS+SSC] Nabers colour coded, Hu Friedy, Chicago, IL, USA) and the defect characterised according to the following classification (Hamp et al. 1975):
  • Degree 0: the furcation entrance can not be assesed with a probe.
  • Degree I: horizontal loss of periodontal tissue support up to 3 mm.
  • Degree II: horizontal loss of support exceeding 3 mm, but not encompassing the total width of the furcation area.
  • Degree III: horizontal \'through-and- through\'-destruction of the periodontal tissue in the furcation.

Resective techniques

  • 1 trisection
  • 2 hemisections
  • 12 root resections
  • 2 teeth were restored with fillings, 7 with crowns and 6 with double crowns
Fig.1 Situation baseline Fig.2 Hemisection intrasurgical Fig.3 Situation baseline Fig.4 Trisection intrasurgical Fig.5 Situation baseline Fig.6 Root resection intrasurgical


During the follow-up period (minimum: 20 months, maximum: 132 months), 2 out of 15 resected teeth (13.3%) had to be extracted because of fractures of the remaining roots.

The remaining 13 (86.7%) teeth showed a stable clinical outcome without signs of gingival or periodontal inflammation.

Table 1: Baseline Table 2: Last SPT

Fig.7 resected teeth Fig.8 teeth that survived

Fig.9 Fig.10


If furcation involvement has advanced to grade II or III, resective treatments should be considered as possible therapeutic strategies. Regular periodontal maintenance and sufficient coronal restoration of the root resected teeth are important preconditions for long-term survival.

This Poster was submitted by Dr. Isabel Simon.

Correspondence address:
Dr. Isabel Simon,
Section of Periodontology,
Department of Conservative Dentistry,
Clinic for Oral, Dental and Maxillofacial Diseases,
University Hospital Heidelberg
Im Neuenheimer Feld 400,
D-69120 Heidelberg