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Baltic Dental and Maxillofacial Journal

September, 2006, Vol. 8, No. 3

CONTENTS

SCIENTIFIC ARTICLES

Evaluation of diametral tensile strength and knoop microhardness of five nanofilled composites in dentin and enamel shades
67-69

A scanning electron microscopic study of debris and smear layer remaining following use of AET instruments and K-flexofiles
70-75

Effect of the lower third molars on the lower dental arch crowding
80-84

Changes in the periodontal condition after replacement of swaged crowns by metal
85-87

Surgical lengthening of the clinical tooth crown
88-95

The relationship between blood serum lipids and periodontal condition
96-100

Stomatologija 2006; 8 (3): 88-95 614 KB

Surgical lengthening of the clinical tooth crown

Liudvikas Planciunas, Alina Puriene, Grazina Mackeviciene

Summary

To understand why the crown lengthening may be desirable, a review of periodontal anatomy is in order. The odontologists know, but often underestimate importance of periodontal tissues health to restoration of defected teeth or dental arches. In order to avoid pathological changes, to predict treatment results more precisely, it is necessary to keep gingival biological width unaltered during teeth restoration. If there are less than 2 mm from restoration's margin to marginal bone clinical crown lengthening possibility should be considered in dental treatment plan. The choice depends on relationship of crown-root-alveolar bone and esthetical expectations. In order to keep margins of restoration supragingivally the distance from marginal bone to margins of restoration should not be less than 3 mm. Ideally the margins of restoration should be supragingivally or in the same level as marginal gingiva. When the margins of restoration are prepared subgingivally, the distance from marginal gingiva to margins of restoration should not be more than 0.7 mm. To continue dental treatment in operated area is recommended not earlier than in 4 weeks, and making restorations in esthetical area - not earlier than in 6 weeks.

Key words: crown lengthening, gingival biological width, periosurgery.

Received: 06 08 2006

Accepted for publishing: 26 09 2006

*Institute of Odontology Medical Faculty Vilnius University

Liudvikas Planciunas* – D.D.S.

Alina Puriene* – D.D.S., PhD, assoc. prof.

Grazina Mackeviciene* – D.D.S., assist. prof

Address correspondence to Liudvikas Planciunas Institute of Odontology, Faculty of Medicine, Vilnius University, Zalgirio 115, 08217 Vilnius, Lithuania.



	Baltic Dental and Maxillofacial Journal

September, 2006, Vol. 8, No. 3 CONTENTS SCIENTIFIC ARTICLES Evaluation of diametral tensile strength and knoop microhardness of five nanofilled composites in dentin and enamel shades 67-69 A scanning electron microscopic study of debris and smear layer remaining following use of AET instruments and K-flexofiles 70-75 Factors related to apical root resorption of maxillary incisors in orthodontic patients 76-79 Effect of the lower third molars on the lower dental arch crowding 80-84 Changes in the periodontal condition after replacement of swaged crowns by metal 85-87 Surgical lengthening of the clinical tooth crown 88-95 The relationship between blood serum lipids and periodontal condition 96-100 © 2006 Stomatologija		Stomatologija 2006; 8 (3): 88-95 614 KB Surgical lengthening of the clinical tooth crown Liudvikas Planciunas, Alina Puriene, Grazina Mackeviciene Summary To understand why the crown lengthening may be desirable, a review of periodontal anatomy is in order. The odontologists know, but often underestimate importance of periodontal tissues health to restoration of defected teeth or dental arches. In order to avoid pathological changes, to predict treatment results more precisely, it is necessary to keep gingival biological width unaltered during teeth restoration. If there are less than 2 mm from restoration's margin to marginal bone clinical crown lengthening possibility should be considered in dental treatment plan. The choice depends on relationship of crown-root-alveolar bone and esthetical expectations. In order to keep margins of restoration supragingivally the distance from marginal bone to margins of restoration should not be less than 3 mm. Ideally the margins of restoration should be supragingivally or in the same level as marginal gingiva. When the margins of restoration are prepared subgingivally, the distance from marginal gingiva to margins of restoration should not be more than 0.7 mm. To continue dental treatment in operated area is recommended not earlier than in 4 weeks, and making restorations in esthetical area - not earlier than in 6 weeks. Key words: crown lengthening, gingival biological width, periosurgery. Received: 06 08 2006 Accepted for publishing: 26 09 2006 Institute of Odontology Medical Faculty Vilnius University Liudvikas Planciunas – D.D.S. Alina Puriene* – D.D.S., PhD, assoc. prof. Grazina Mackeviciene* – D.D.S., assist. prof Address correspondence to Liudvikas Planciunas Institute of Odontology, Faculty of Medicine, Vilnius University, Zalgirio 115, 08217 Vilnius, Lithuania.