Det odontologiske fakultet

Odontologisk institutt, Periodonti

Produksjonsdato : 2001-02-02
Katalogtype: Fullformat.

1
PublKat: A11 (Artikkel i internasjonalt vitenskapelig tidsskrift med referee)
Instit:  Universitetet i Bergen, Det odontologiske fakultet, Odontologisk institutt, Periodonti
Forf:    Leknes, K.N.
         UiB-Odont: Institutt for periodonti
Medforf: Lie, T.
         UiB-Odont: Institutt for periodonti
Medforf: Wikesjö, U.M.E.
Medforf: Bogle, G.C.
Medforf: Selvig, K.A.
         UiB-Odont: Institutt for odontologisk forskning
Tittel:  Influence of Tooth Instrumentation Roughness on Subgingival Microbial
         Colonization
Tidskr:  Journal of periodontology
ISSN:    0022-3492
År:      1994
Volum:   65
Side(r): s. 303-308
Emneord: periodontal pockets/microbiology, planing/instrumentation, scaling/in
         strumentation, tooth root/microbiology
SamNor:  This study evaluated microbial colonization of periodontal pockets su
         bjected to root instrumentation with a curet or a rotating diamond. T
         en maxillary and 10 mandibular subgingival pockets were established i
         n the canines of 5 beagle dogs. The subgingival root surface areas we
         re debrided by a sharp curet or a flame-shaped, fine-grained, rotatin
         g diamond point. The dogs were fed a plaque-inducing diet for 70 days
         . Specimens from both instrumentation groups were then harvested and
         prepared for stereomicroscopic and scanning electron microscopic eval
         uation. Grading of the extent of subgingival colonization was perform
         ed in coded specimens directly on the fluorescent screen of the scann
         ing electron microscope in a grid-counting system. Error of the metho
         d was assessed by duplicate counts. The subgingival roor surface area
         s were divided into 3 zones: cervical, middle, and apical, and statis
         tical differences between these zones as well as between the 2 instru
         mentation groups were calculated. The results revealed that curet-tre
         ated surfaces were smoother and promoted less subgingival colonizatio
         n than diamondtreated surfaces. The difference in amount of bacterial
          colonization between the 2 groups was statistically significant (P<0
         .05) in all zones. Bacterial colonization decreased in apical directi
         on in both instrumentation groups. For the diamond-treated specimens,
          this decrease was significant (P<0.05) between each of the 3 zones.
         In the curet -treated specimens, the decrease was significant only be
         tween the cervical and the apical zone (P<0.05). The present study ha
         s demonstrated that subgingival instrumentation roughness significant
         ly influences the subgingival microbial colonization.
Språk:   eng
PublID:  r95003528
StatKat: f

2
PublKat: A11 (Artikkel i internasjonalt vitenskapelig tidsskrift med referee)
Instit:  Universitetet i Bergen, Det odontologiske fakultet, Odontologisk institutt, Periodonti
Forf:    Leknes, K.N.
         Institutt for periodonti
Medforf: Lie, T.
         Institutt for periodonti
Medforf: Selvig, K.A.
Tittel:  Root Grooves: A Risk Factor in Periodontal Attachment Loss
Tidskr:  Journal of periodontology
ISSN:    0022-3492
År:      1994
Volum:   65
Side(r): s. 859-863
Emneord: tooth/anatomy and histology, periodontal attachment, patient care pla
         nning, periodontal diseases/diagnosis
SamNor:  Periodontal health reflects a balance between harmful and protective
         elements in the gingival margin area. The total plaque mass, specific
          periodontopathogens, and local environmental factors may challenge t
         his balance. The aim of this retrospective study was to evaluate the
         effect of proximal root grooves as a risk factor in periodontal attac
         hment loss. One-hu ndred and three (103) extracted, formalinstored, s
         ingle-rooted teeth showing loss of attachment and having one non-groo
         ved and one grooved proximal root surface were selected for thestudy.
          Following staining in 0.1% toluidine blue to visualize attached peri
         odontal ligament remnants, the teeth were examined in a light microsc
         ope under incident light. On each tooth , loss of attachment was meas
         ured along the long axis of the root from the cemento-enamel junction
          to the most coronal level of the stained periodontal ligament remnan
         ts on mesial aswell as on distal surfaces. Incisors and premolars wer
         e grouped separately. For both groups, a statistically significant gr
         eater loss of attachment was present on grooved than on non- grooved
         surfaces (P<0.0001). Generally, there was a direct relationship betwe
         en groove location and maximum loss of attachment. The results indica
         te that proximal root grooves should be considered in periodontal dia
         gnosis, prognosis, and treatmen planning.
Språk:   eng
PublID:  r95003527
StatKat: f

3
PublKat: A11 (Artikkel i internasjonalt vitenskapelig tidsskrift med referee)
Instit:  Universitetet i Bergen, Det odontologiske fakultet, Odontologisk institutt, Periodonti
Forf:    Lie, T.
         Institutt for periodonti
Medforf: Ali, R.W.
Tittel:  Periodontal Conditions as Measured by CPITN in Sudanese Adolescents an
         d Adults in two Cities in Sudan
Tidskr:  The Saudi Dental Journal
År:      1994
Volum:   6
Hefte:   2
Side(r): s. 83-87
SamNor:  This study examines the prevalence and severity of periodontal condit
         ions and estimates the periodontal treatment needs by CPITN in groups
          of Sudanese subject. Study sample was grouped according to age and a
          total of 264 subjects were examined, 126 adolescents and 138 adults.
          Results indicated that the prevalence of periodontal disease among a
         dolescents was high, with 95.2% having pockets 4-5 mm and 4% having p
         ocket depths >/= 6mm. In the 35 to 44 years age-group, 71% of the sub
         jects had 4-5 mm pockets and 26% had pockets >/= 6 mm. Among th e 45
         to 64 years age-group, 64,5% had 4-5 mm pockets and 35.5% had pockets
          >/= 6 mm. All subjects in all age-groups needed oral hygiene instruc
         tions, and almost all required calculus removal for more than 5 sexta
         nts per subject. Complex (surgical) periodontal treatment was needed
         by 4% of adolescents to treat about 0.1 sextants per person, and by m
         ore than 30% of all adults to treat about 0.4 to 0.8 sextants per per
         son.
Språk:   eng
PublID:  r95003530
StatKat: f

4
PublKat: A11 (Artikkel i internasjonalt vitenskapelig tidsskrift med referee)
Instit:  Universitetet i Bergen, Det odontologiske fakultet, Odontologisk institutt, Periodonti
Forf:    Nunes, I.P.
         Institutt for periodonti
Medforf: Johannessen, A.C.
Medforf: Matre, R.
Medforf: Kristoffersen, T.
Tittel:  Epithelial expression of HLA class II antigens and Fcy receptors in pa
         tients with adult periodontitis
Tidskr:  Journal of clinical periodontology
ISSN:    0303-6979
År:      1994
Volum:   94
Hefte:   21
Side(r): s. 526-532
Utgiver: Munksgaard
Emneord: MHC, HLA-DR, HLA-DQ, HLA-DP, FcyR I, FcyR II, FcyR III, Langerhans ce
         lls, adult periodontitis
SamNor:  The distribution of HLA class II (DR, DP, DQ) and FcyR (I, II, III) w
         as analyzed in the epithelia of patients with advanced marginal perio
         dontitis using cryostat sections incubated with monoclonal antibodies
          (MoAb) against the Langerhans cell (LC) (CD1a) and various subtypes
         of HLA class II and FcyR, and the indirect immunofluorescence techniq
         ue. In the oral gingival epithelium (OGE), LC were concentrated subja
         cent to the connective tissue papillae, while in the pocket epitheliu
         m (PE), they were most abundant at the gingival margin. HLA-DP, DQ, a
         nd DR stained LC in both OGE and PE. HLA-DQ+ LC were significantly fe
         wer than DP+ and DR+ LC. HLA-DR also stained keratinocytes (KC) in th
         e whole extension of both OGE and PE. HLA-DP was also observed on KC,
          but not HLA-DQ. FcyR II stained both LC and focal areas of KC. In PE
          FCyR II+ LC were concentrated near the bottom of the pocket, while i
         n the OGE, they were concentrated at the gingival margin. FcyR III wa
         s present only on KC, especially in the basal and suprabasal layer. T
         he results indicate that the epithelial cells are actively involved i
         n the development and maintenance of the inflammation of periodontal
         disease.
Språk:   eng
PublID:  r95003529
StatKat: f


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