But at a particular moment in the past, the Neman River eroded the Vilkiskes marginal ridge
, changed direction and started to flow into the Baltic Sea basin to the north from the Sambian Peninsula.
The location of the contact is also important in protecting the tissues against food impaction The optimum cervico-occlusal location of the posterior contact area is at the longest mesiodostal diameter of the generally just apical to the crest of marginal ridge.
Food impaction associated with open contact causes more probing depth and clinical attachment loss interproximally than that associated with uneven marginal ridge.
Task Two: As for Task One and in addition, cut a slot vertically downward at the marginal ridge to create a box 2mm in length, 2mm in width and 3mm in depth.
There was also an improvement in the mean groove distance to the marginal ridge between the initial and final skills practice, although this did not reach statistical significance (Table 1).
For example, in Scenario Two, where a 5-year-old patient presents with a MO cavity in tooth 85 with loss of the marginal ridge
and who is not dentally anxious.
In a scenario for tooth 85 resulting in loss of more than half the marginal ridge
and with neither clinical symptoms nor signs, for a non-anxious patient, postgraduates selected vital pulpotomy (MTA or ferric sulphate), indirect pulp capping/conventional and plastic restoration, and other techniques in 12/32, 6/32 and 4/32 of cases respectively.
The examination of the patient involves the sequential assessment for all restorations for evidence of recurrent caries, dislodgement of the restorations, marginal ridge
fracture or fracture of the tooth.
The extension was done up to the point that 2/3 of the mesiodistal width of the teeth in both buccal and lingual surfaces remained, and in the occlusal cavity up to the point that the remaining width of the marginal ridge
was the same as that of a bur 256 (0.
The depth of COS was measured for each group using a flat plane touching the incisors anteriorly and distal marginal ridges
of posterior teeth on mandibular cast.
The mandibular right first and second molars (#30 and #31) were also affected, with the loss of tooth structure confined to their marginal ridges
For group 1 patients all occlusal contacts on the functional and nonfunctional cusps as well as on the marginal ridges
were reduced by 1 mm by using a diamond bur in a high-speed handpiece with copious water spray.