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Modeling and remodeling of human extraction sockets.

Artikel i vetenskaplig tidskrift
Författare Leonardo Trombelli
Roberto Farina
Andrea Marzola
Leopoldo Bozzi
Birgitta Liljenberg
Jan Lindhe
Publicerad i Journal of clinical periodontology
Volym 35
Nummer/häfte 7
Sidor 630-9
ISSN 1600-051X
Publiceringsår 2008
Publicerad vid Institutionen för odontologi
Sidor 630-9
Språk en
Länkar dx.doi.org/10.1111/j.1600-051X.2008...
Ämnesord alveolar ridge; bone healing; histomorphometric analysis; tissue modeling/remodeling; tooth extraction
Ämneskategorier Parodontologi

Sammanfattning

INTRODUCTION: The available studies on extraction wound repair in humans are affected by significant limitations and have failed to evaluate tissue alterations occurring in all compartments of the hard tissue defect. AIM: To monitor during a 6-month period the healing of human extraction sockets and include a semi-quantitative analysis of tissues and cell populations involved in various stages of the processes of modeling/remodeling. MATERIAL AND METHODS: Twenty-seven biopsies, representative of the early (2-4 weeks, n=10), intermediate (6-8 weeks, n=6), and late phase (12-24 weeks, n=11) of healing, were collected and analysed. RESULTS: Granulation tissue that was present in comparatively large amounts in the early healing phase of socket healing, was in the interval between the early and intermediate observation phase replaced with provisional matrix and woven bone. The density of vascular structures and macrophages slowly decreased from 2 to 4 weeks over time. The presence of osteoblasts peaked at 6-8 weeks and remained almost stable thereafter; a small number of osteoclasts were present in a few specimens at each observation interval. CONCLUSIONS: The present findings demonstrated that great variability exists in man with respect to hard tissue formation within extraction sockets. Thus, whereas a provisional connective tissue consistently forms within the first weeks of healing, the interval during which mineralized bone is laid down is much less predictable.

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