TY - JOUR
T1 - A resin-modified glass ionomer cement barrier for treating degree II furcation defects
T2 - a pilot study in dogs
AU - Miranda, Letícia Algarves
AU - Gomes, Sabrina Carvalho
AU - Soares, Ilson José
AU - Oppermann, Rui Vicente
PY - 2006/2
Y1 - 2006/2
N2 - OBJECTIVE: The aim of this study was to evaluate in an animal model the healing of degree II furcation defects treated with: an experimental barrier of resin-modified glass-ionomer cement (GIC), a polylactic acid barrier (GUI), and flap surgery (CTR).MATERIAL AND METHODS: In 3 beagles, 18 class II furcation defects were surgically produced in mandibular and maxillary premolars and exposed to plaque accumulation for 21 days. Following a full flap, notches were made at the base to the bone defect. GIC barriers were prepared immediately before use from a commercial product and fit to place with the same product. The GIC barriers were removed after 30 days and the dogs euthanized after 120 days. Histologic sections were analyzed in a computer-assisted microscope. Epithelium, new cementum with inserting fibers, and connective tissue lining the root surface in-between notches were measured and medians of percentage values calculated.RESULTS: In the GIC, epithelium constituted 3.5% (median values) of the notch-to-notch root area; new cementum was 83.6% and connective tissue 12.9%. These values were 0%, 73.6%, and 26.4% for the GUI group and 35.6%, 43.2%, and 0% for the CTR group. Bone fill median values were 54.3% for GIC, 20.6% for GUI, and 24.6% for CTR.CONCLUSION: GIC and GUI prevented epithelial migration and promoted the formation of new periodontal tissues in experimentally induced class II furcation defects in dogs.
AB - OBJECTIVE: The aim of this study was to evaluate in an animal model the healing of degree II furcation defects treated with: an experimental barrier of resin-modified glass-ionomer cement (GIC), a polylactic acid barrier (GUI), and flap surgery (CTR).MATERIAL AND METHODS: In 3 beagles, 18 class II furcation defects were surgically produced in mandibular and maxillary premolars and exposed to plaque accumulation for 21 days. Following a full flap, notches were made at the base to the bone defect. GIC barriers were prepared immediately before use from a commercial product and fit to place with the same product. The GIC barriers were removed after 30 days and the dogs euthanized after 120 days. Histologic sections were analyzed in a computer-assisted microscope. Epithelium, new cementum with inserting fibers, and connective tissue lining the root surface in-between notches were measured and medians of percentage values calculated.RESULTS: In the GIC, epithelium constituted 3.5% (median values) of the notch-to-notch root area; new cementum was 83.6% and connective tissue 12.9%. These values were 0%, 73.6%, and 26.4% for the GUI group and 35.6%, 43.2%, and 0% for the CTR group. Bone fill median values were 54.3% for GIC, 20.6% for GUI, and 24.6% for CTR.CONCLUSION: GIC and GUI prevented epithelial migration and promoted the formation of new periodontal tissues in experimentally induced class II furcation defects in dogs.
KW - Animals
KW - Biocompatible Materials
KW - Bone Regeneration
KW - Citrates
KW - Connective Tissue/physiology
KW - Dental Cementum/physiology
KW - Dogs
KW - Epithelium/physiology
KW - Female
KW - Furcation Defects/surgery
KW - Glass Ionomer Cements
KW - Guided Tissue Regeneration, Periodontal/instrumentation
KW - Membranes, Artificial
KW - Pilot Projects
KW - Polyesters
U2 - 10.1080/00016350500367520
DO - 10.1080/00016350500367520
M3 - Article
C2 - 16428181
SN - 0001-6357
VL - 64
SP - 37
EP - 41
JO - Acta Odontologica Scandinavica
JF - Acta Odontologica Scandinavica
IS - 1
ER -